Population & age
- Total population
- 729
- Median age
- 53.0
Blanca, CO (81123)
Costilla County · Population 729
Fresh.Data current as of Apr 24, 2026
Blanca, CO (ZIP 81123) sits in Costilla County. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: Diabetes comes in above the national average at 15.3%. NCES lists 1 schools serving the area, 1 non-charter. 1 college or university serves the area, with median in-state tuition of $9,824. 27% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $40,602 per worker, roughly 38% below the US average. BLS LAUS records a 7.1% county unemployment rate (2024) — about 3.1 points above the US average and a labor-market distress signal. CDC's Social Vulnerability Index places this ZIP in the 87th percentile nationally — a highly vulnerable community profile. FEMA has issued 10 federal disaster declarations affecting this ZIP since 1970. Annual average temperature is just 42.3°F per NOAA's 1991–2020 Climate Normals — a notably cold-weather climate. County Health Rankings reports 20,239 years of potential life lost per 100,000 (2025) — well above the national county median. Per USDA's Food Environment Atlas, 100.0% of residents in this county live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket — a deep food-access gap. IRS migration data (2022-2023) shows a net gain of 131 residents (83 households) — the ZIP's primary county is growing. Both healthcare access and on-paper school density skew lighter than national norms; what shows up here is a snapshot, not a verdict — neighborhood-level texture matters at this scale. Notable: median household income $34,444, fair market rent of $1,100 for a two-bedroom, and a typical home value of $182,806, down 17.0% over the past year. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
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Demographics
Race & ethnicity
- White
- 67.1%
- Black
- 3.2%
- Asian
- 6.3%
- Hispanic / Latino
- 39.1%
- Other / multi-racial
- 23.3%
Income & housing
- Median household income
- $34,444
- Median home value
- $107,800
Education
- Bachelor's degree or higher (age 25+)
- 22.2%
Employment
- Unemployment rate
- 6.9%
Housing
- Owner-occupied
- 261(78.6%)
- Renter-occupied
- 71(21.4%)
- Vacant units
- 119
- Built (median)
- 1991
Commute
- Public transit
- 0(0.0%)
- Work from home
- 2(0.8%)
- Avg commute
- 21.3 min
Economic wellbeing
- Below poverty line
- 149(20.4%)
- Uninsured
- 9(1.2%)
Digital access
- Broadband access
- 289(87.0%)
- No broadband
- 43(13.0%)
Language & nativity
- Foreign-born
- 73(10.0%)
- Non-English at home
- 185(27.2%)
Fair Market Rent
Fresh.HUD SAFMR · May 1, 2026Studio
$830
/month
1 Bed
$840
/month
2 Bed
$1,100
/month
3 Bed
$1,530
/month
4 Bed
$1,720
/month
HUD Fair Market Rents represent the 40th percentile of standard-quality rental housing in this area. FY2026 data.
Home values
Typical home value
$182,806
Zillow Home Value Index (ZHVI) · as of March 2026
Year-over-year change
-17.0%
vs. March 2025
5-year change
-0.4%
vs. March 2021
Source: Zillow Research, ZHVI All Homes (SFR, Condo/Co-op) Time Series (zillow.com/research/data). Zillow Home Value Index (ZHVI) is copyrighted by Zillow, Inc.
New housing construction
New housing units permitted
145
Across 145 permitted buildings. Total construction value: $60.4M.
Single-family
145
100% of total units
Multifamily (2+ unit)
0
0% of total units
Single-family value
$60.4M
construction value
Multifamily value
$0
construction value
Based on county-level data (2024).
Source: U.S. Census Bureau Building Permits Survey (census.gov/construction/bps). Public domain. BPS reports annual residential building permits from local permit-issuing jurisdictions, aggregated to county. A permit reflects intent to build, not a completed unit — actual construction lags by 6-24 months for multifamily projects.
Income & tax statistics
Tax returns filed
330
Average AGI
$49,212
Avg property tax
—
EITC participation
27.3%
Income distribution
- $1 – $25,00039.4% · 130
- $25,000 – $50,00027.3% · 90
- $50,000 – $75,00015.2% · 50
- $75,000 – $100,0009.1% · 30
- $100,000 – $200,0009.1% · 30
- $200,000 or more0.0% · 0
Avg mortgage interest
—
Avg charitable contribution
—
Avg capital gains
—
Avg total income tax
—
Source: IRS Statistics of Income — Individual Income Tax Statistics by ZIP Code (irs.gov). Public domain. Dollar columns reported in thousands by the IRS; figures here display real dollars. Total ZCTA AGI for the area was $16.2M across all reported brackets.
Business & employment
Business establishments
10
Total employment
161
Annual payroll
$7.9M
Average annual pay
$49,050
Source: U.S. Census Bureau, ZIP Business Patterns (census.gov). Public domain. ZBP covers establishments with paid employees; Census suppresses employment and payroll values when fewer employers operate in a ZIP than would protect their confidentiality.
Employment & wages
Average annual pay
$40,602
Average weekly wage
$781
Total employment
962
Total establishments
116
That is roughly 38% below the US national average of $65,470 per worker.
Source: U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (bls.gov/cew). Public domain. QCEW is derived from state unemployment-insurance filings and covers ~95% of US jobs. Figures are county-level totals assigned to ZIPs whose primary county matches; small-employer cells are suppressed by BLS to protect employer confidentiality.
Unemployment
Unemployment rate
7.1%
That is 3.1 percentage points above the US national unemployment rate of about 4.0%.
Labor force
1,319
Employed
1,225
Unemployed
94
Based on Costilla County, CO data (2024).
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics (bls.gov/lau). Public domain. LAUS publishes monthly and annual labor-force estimates for every US county. Figures are county-level totals assigned to ZIPs whose primary county matches.
Public libraries
Public-library outlets
1
Single library outlet
One public-library outlet serves this ZIP — typical of suburban and small-town areas. Card holders also have full access to the rest of the system's branches.
Buildings
1
1 branch
Avg hours / week
32
across outlets in this ZIP
Avg square feet
1,634
per outlet
Outlets in this ZIP
- 1.Blanca/fort Garland Library
Public libraries provide free WiFi, computer access, children's programming, job-seeking resources, and meeting space — community infrastructure beyond books. FY2023 outlet inventory from the federal Public Libraries Survey.
Source: Institute of Museum and Library Services (imls.gov). Per-ZIP counts of active public-library outlets — central buildings, branches, and bookmobiles — operated by federally reporting library systems.
Federal Disaster Declarations
Federally Declared Disasters
10
Date Range
1970–2020
Most Recent Declaration
COVID-19 PANDEMIC
Biological — declared March 28, 2020 (DR-4498)
Incident period: January 20, 2020 – May 11, 2023
Top Incident Types
- Fire3 (30%)
- Biological2 (20%)
- Flood2 (20%)
- Coastal Storm1 (10%)
- Snowstorm1 (10%)
- Other1 (10%)
Individual Assistance
2
Direct help to disaster survivors
Households Program
1
Housing & temporary lodging support
Public Assistance
9
Repair of public facilities & roads
Hazard Mitigation
3
Funding to reduce future disaster risk
FEMA declares disasters at the county level; counts here include every federally declared disaster touching any county that overlaps this ZIP. Statewide declarations and pre-1964 records without county granularity are excluded. Program flags reflect which FEMA assistance categories were activated (Individual Assistance, Households, Public Assistance, Hazard Mitigation). Source: fema.gov/openfema. Public domain.
Climate
30-year averages (1991-2020) from the nearest GHCN-D weather station. Temperature and precipitation values reflect typical annual conditions, not any single year.
Avg. temperature
42.3°F
24.3° – 60.3°
Annual precipitation
7.4"
Annual snowfall
27.9"
Heating · cooling days
8,321 · 71
Annual base 65°F
Nearest station: ALAMOSA SAN LUIS AP, CO US, 16.3 miles from the centroid of Blanca, CO (ZIP 81123)
Source: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals (ncei.noaa.gov). Public domain.
Community health profile
Years of potential life lost (per 100K)
20,239
That is roughly 12,039 years per 100,000 above the national county median (~8,200).
Premature death is the headline composite outcome CHR reports — age-adjusted, all-cause, before age 75.
Fair or poor health
24%
of adults self-report
Poor physical health days
5.1
avg per adult per month
Poor mental health days
5.9
avg per adult per month
Uninsured
11.1%
of residents under 65
Primary care MDs
—
per 100,000 residents
Preventable hospital stays
2,506
per 100K Medicare enrollees
Food environment (0-10)
1.2
10 = best access & security
Exercise access
42%
residents near a facility
Flu vaccinated
31%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 18.4% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Costilla data (2025 CHR release).
Source: County Health Rankings & Roadmaps, University of Wisconsin Population Health Institute (countyhealthrankings.org). Annual release. Underlying source datasets vary by measure (CDC BRFSS, NCHS Vital Statistics, AHA, USDA Food Environment Atlas, and others). Figures are county-level and assigned to every ZIP whose primary county matches.
Food access
Food access status
Limited food access for many residents
100.0% of Costilla County, CO residents live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket.
Grocery stores
—
per 1,000 residents
Supercenters & clubs
—
per 1,000 residents
SNAP-authorized stores
2.55
accepting food benefits
Fast-food restaurants
—
per 1,000 residents
Among low-income residents, 58.0% are low-access — those without a supermarket within 1 mile (urban) or 10 miles (rural).
Per-1,000 figures show how many of each store type exist in Costilla County, CO for every 1,000 residents. Higher grocery and supercenter density usually means easier access to fresh food; higher convenience-store-only density (with low grocery rate) often signals a food swamp.
Source: USDA Economic Research Service, Food Environment Atlas (ers.usda.gov). County-level metrics fanned to ZIP via the primary county in the Census ZCTA-county relationship file. Variable years differ per family (stores ~2020, low-access ~2019).
Who’s moving in and out
Net migration (2022-2023)
▲+131 people
+83 households • +$3.0M net AGI flow
Moved in
194households
340 people • $7.6M AGI
Moved out
111households
209 people • $4.6M AGI
Where new residents came from
- Alamosa County, CO — 22 households
Where departing residents went
- Alamosa County, CO — 21 households
Incoming households reported an average AGI of $39,253 versus departing households' $41,216.
Source: U.S. Internal Revenue Service, Statistics of Income, Migration Data (irs.gov). Public domain. Migration is measured by year-over-year changes in the address on individual tax returns; figures are county-level totals attributed to ZIPs whose primary county matches. Foreign migration contributes to inflow/outflow totals but does not appear in the top-county lists. Small flows are suppressed by IRS to protect taxpayer confidentiality.
Taxes & benefits in Colorado
State-level rules that apply to every resident of ZIP 81123. Numbers reflect the most recent published year per source.
Tax rates
Income tax
Yes
graduated
Sales tax (combined)
7.89%
State 2.90% · avg local 4.99%
Property tax (effective)
0.48%
Median $1,025/year
Tax burden rank
22 of 50
9.60% of personal income
For ZIP 81123: Applied to this ZIP's typical home value of $182,806, that works out to roughly $869/year in property tax.
Paid family leave
Program
FAMLI
Mandatory (state-run insurance)
Max weeks/year
16
Parental
12wk
Max weekly benefit
$1,381
Replacement: 90% AWW up to 0.5x SAWW + 50% above · job protection
Safety net
SNAP eligibility
200% FPL
Broad-Based Categorical Eligibility (raises gross income limit above federal 130% floor). No asset test.
Sources: Tax Foundation (state tax rates & brackets), Bipartisan Policy Center (paid family leave), USDA FNS (SNAP categorical eligibility).
Other ZIPs near 81123
Nearby ZIPs by distance
81133 (Fort Garland, 13.3 mi) · 81151 (Sanford, 14.3 mi) · 81101 (Alamosa, 16.2 mi) · 81146 (17.2 mi) · 81126 (21 mi) · 81152 (San Luis, 21.3 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
Data sources used on this page
SourcesFresh.CDC PLACES · Apr 24, 2026Fresh.NCES CCD via Urban Institute EDP · Apr 27, 2026Fresh.HUD SAFMR · May 1, 2026
All data on this page is sourced from federal government datasets · Not AI-generated · Methodology
Health profile
Crude prevalence estimates from CDC PLACES, derived from BRFSS small-area modeling. Population-level figures only.
Obesity
30.8%
2.2pp below the 33.0% national rate.
High Blood Pressure
36.1%
4.1pp above the 32.0% national rate.
Depression
20.8%
Tracks close to the 22.0% national rate.
Annual Checkup
74.2%
Tracks close to the 76.0% national rate.
Health Insurance
16.0%
3.0pp above the 13.0% national rate.
Diabetes
15.3%
4.3pp above the 11.0% national rate.
Schools in this ZIP
1 school serves this ZIP, including 1 non-charter.
| School | Type | Grades | Enrollment |
|---|---|---|---|
| Sierra Grande K-12 School | Public | -1–12 | 261 |
Schools listed from NCES Common Core of Data via the Urban Institute Education Data Portal.
Fresh.NCES CCD via Urban Institute EDP · Apr 27, 2026Colleges & universities nearby
Colleges in this area
1
Median in-state tuition
$9,824
Median earnings (10 yr)
$44,372
- 4-Year
Adams State University
Alamosa, CO · 81101
- In-state tuition
- $9,824
- Out-of-state tuition
- $21,944
- Acceptance rate
- —
- Graduation rate
- 35.7%
- Median earnings (10 yr)
- $44,372
- Median student debt
- $19,500
Source: U.S. Department of Education College Scorecard (collegescorecard.ed.gov). Public domain data. Earnings figures reflect median earnings 10 years after entry for federally-aided students.
What these numbers say together
Blanca, CO (ZIP 81123) sits in Costilla County. The page draws on 2 federal data feeds retrieved Apr 27. Top health signal: Diabetes comes in above the national average at 15.3%. NCES lists 1 schools serving the area, 1 non-charter. 1 college or university serves the area, with median in-state tuition of $9,824. 27% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $40,602 per worker, roughly 38% below the US average. BLS LAUS records a 7.1% county unemployment rate (2024) — about 3.1 points above the US average and a labor-market distress signal. CDC's Social Vulnerability Index places this ZIP in the 87th percentile nationally — a highly vulnerable community profile. FEMA has issued 10 federal disaster declarations affecting this ZIP since 1970. Annual average temperature is just 42.3°F per NOAA's 1991–2020 Climate Normals — a notably cold-weather climate. County Health Rankings reports 20,239 years of potential life lost per 100,000 (2025) — well above the national county median. Per USDA's Food Environment Atlas, 100.0% of residents in this county live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket — a deep food-access gap. IRS migration data (2022-2023) shows a net gain of 131 residents (83 households) — the ZIP's primary county is growing. Both healthcare access and on-paper school density skew lighter than national norms; what shows up here is a snapshot, not a verdict — neighborhood-level texture matters at this scale. Notable: median household income $34,444, fair market rent of $1,100 for a two-bedroom, and a typical home value of $182,806, down 17.0% over the past year. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
The two domains pull in different directions. Healthcare access reads strong, but the on-paper school count is on the lighter side — that’s less a quality signal and more a density one. Households here often look at districts a few ZIPs over for school choice while keeping their providers local.
One concrete reading worth keeping: Depression prevalence sits near the national rate at 20.8%. Each figure on this page links to the original federal dataset with its retrieval date — this synthesis is a reading, not a substitute for the underlying records.
Frequently Asked Questions — ZIP 81123
What is the obesity rate in ZIP 81123?
30.8%, which is 2.2 percentage points below the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the depression rate in ZIP 81123?
20.8%, which is 1.2 percentage points below the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the high blood pressure rate in ZIP 81123?
36.1%, which is 4.1 percentage points above the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
How many schools are in ZIP 81123?
1 school serves this ZIP, including 1 public school (NCES CCD, retrieved Apr 27, 2026). No charter schools are listed in this ZIP by NCES CCD.
Does ZIP 81123 have charter schools?
No charter schools are listed in ZIP 81123 by NCES CCD (retrieved Apr 27, 2026).
Are there high schools in ZIP 81123?
Yes, 1 high school serves this ZIP: Sierra Grande K-12 School. (NCES CCD, retrieved Apr 27, 2026).
What is the population of ZIP 81123?
729 people live in ZIP 81123, with a median age of 53.0 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the median household income in ZIP 81123?
$34,444 per year (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
Is ZIP 81123 mostly renters or homeowners?
In ZIP 81123, 78.6% of occupied housing units are owner-occupied and 21.4% are renter-occupied (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How do people commute in ZIP 81123?
In ZIP 81123, 0.8% of workers work from home. Public transit is used by 0.0% of commuters (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the poverty rate in ZIP 81123?
20.4% of the population in ZIP 81123 lives below the federal poverty line (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What percentage of households in ZIP 81123 have broadband internet?
87.0% of households in ZIP 81123 have broadband internet access (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the typical home value in ZIP 81123?
The typical home value in ZIP 81123 is $182,806, down 17.0% from a year ago (Zillow Home Value Index, retrieved May 1, 2026).
Are home values rising or falling in ZIP 81123?
Home values are down 17.0% over the past year and down 0.4% over the past five years (Zillow Home Value Index, retrieved May 1, 2026).
What is the average household income in ZIP 81123?
The average Adjusted Gross Income reported on tax returns from ZIP 81123 (Blanca, CO) is $49,212 per return (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How much do homeowners pay in property tax in ZIP 81123?
Tax returns from ZIP 81123 report an average of $0 per return in real-estate tax deductions (IRS SOI Tax Year 2022, retrieved May 2, 2026).
What percentage of residents in ZIP 81123 earn over $200,000?
0.0% of tax returns from ZIP 81123 (Blanca, CO) report Adjusted Gross Income of $200,000 or more (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How many businesses are in ZIP 81123?
As of 2022, 10 business establishments operated in ZIP 81123 employing 161 workers (Census ZIP Business Patterns, retrieved May 3, 2026).
What is the average salary in ZIP 81123?
The average annual pay across all local establishments in ZIP 81123 is $49,050, based on Census ZIP Business Patterns 2022 data (retrieved May 3, 2026).
How vulnerable is ZIP 81123 to disasters and public health emergencies?
According to the CDC Social Vulnerability Index (2022), ZIP 81123 ranks in the 87th percentile nationally for social vulnerability — a very high vulnerability profile (retrieved May 3, 2026).
What is the biggest vulnerability factor in ZIP 81123?
Household Characteristics is the highest-scoring CDC SVI theme for ZIP 81123, ranking in the 99th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
How many federally declared disasters has ZIP 81123 experienced?
FEMA has recorded 10 federal disaster declarations affecting ZIP 81123 between 1970–2020 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
What kinds of disasters most often hit ZIP 81123?
Fire is the most common federally declared disaster type affecting ZIP 81123, accounting for 3 of 10 declarations (30%, FEMA OpenFEMA, retrieved May 3, 2026).
What was the most recent disaster declared for ZIP 81123?
The most recent FEMA disaster declaration affecting ZIP 81123 was "COVID-19 PANDEMIC" — a biological declared in 2020 (DR-4498) (FEMA OpenFEMA, retrieved May 3, 2026).
What colleges are near ZIP 81123?
1 college or university is listed near ZIP 81123 by the U.S. Department of Education College Scorecard, including Adams State University (retrieved May 2, 2026).
What is the average tuition at colleges near ZIP 81123?
Median in-state tuition across 1 nearby institution is $9,824 (College Scorecard, retrieved May 2, 2026).
What do graduates earn from colleges near ZIP 81123?
Graduates of nearby colleges earn a median of $44,372 ten years after entry (College Scorecard, retrieved May 2, 2026).
What is the climate like in ZIP 81123?
ZIP 81123 has an average annual temperature of 42.3°F and 7.4" of annual precipitation based on the ALAMOSA SAN LUIS AP, CO US weather station 16.3 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
What taxes apply in ZIP 81123?
Colorado has a graduated income tax with a top rate of unspecified. Combined sales tax: 7.89% (Tax Foundation 2025).
Does Colorado have paid family leave?
Colorado runs an active paid family leave program (FAMLI) offering up to 16 weeks of paid leave per year, with a maximum weekly benefit of $1,381 (Bipartisan Policy Center 2026).
What data is available for ZIP 81123?
This page covers health outcomes from CDC PLACES (33 metrics), school information from NCES CCD (1 school), demographics from the Census ACS 5-Year (2022), home values from the Zillow Home Value Index, colleges from the U.S. Department of Education College Scorecard (1 institution), income & tax statistics from the IRS SOI (Tax Year 2022), local business & employment from Census ZIP Business Patterns (2022), social vulnerability scores from the CDC/ATSDR SVI (2022), federal disaster declarations from FEMA OpenFEMA (10 on record), climate normals from NOAA NCEI (1991-2020), and state-level tax rates from the Tax Foundation. Data is refreshed on Mubboo's standard schedule.
How current is this data?
Health data retrieved Apr 24, 2026 from CDC PLACES. School data retrieved Apr 27, 2026 from NCES CCD. Demographics retrieved Apr 30, 2026 from Census ACS 5-Year (2022). Home values retrieved May 1, 2026 from Zillow Research. College data retrieved May 2, 2026 from U.S. Dept of Education College Scorecard. Income & tax statistics retrieved May 2, 2026 from IRS SOI (Tax Year 2022). Business & employment retrieved May 3, 2026 from Census ZBP (2022). Social vulnerability scores retrieved May 3, 2026 from CDC/ATSDR SVI (2022). Federal disaster declarations retrieved May 3, 2026 from FEMA OpenFEMA (10 on record). Climate normals retrieved May 8, 2026 from NOAA NCEI (1991-2020). State-level tax rates retrieved 2026-05-05 15:58:22.284+00 from the Tax Foundation.
Other ZIPs near 81123
Nearby ZIPs by distance
81133 (Fort Garland, 13.3 mi) · 81151 (Sanford, 14.3 mi) · 81101 (Alamosa, 16.2 mi) · 81146 (17.2 mi) · 81126 (21 mi) · 81152 (San Luis, 21.3 mi)
Compare ZIP-level stats — population, schools, housing, climate — across nearby areas. Source: U.S. Census Bureau ZCTA basemap.
More Info topics
Have a specific question about ZIP 81123?
Ask Mubboo — launching Q4 2026.
Data refreshed via Mubboo's ETL pipeline; oldest source on this page retrieved Apr 24, 2026.
Social Vulnerability Index
Overall SVI
87th percentile
Very High Vulnerability
Based on 1 census tract, population 446
Vulnerability Themes
Households Without Vehicle
10
Limited English Speakers
16
Persons with Disability
96
Without HS Diploma
39
Without Health Insurance
32
Adults Age 65+
115
The Social Vulnerability Index uses U.S. Census data to identify communities most at risk during public health emergencies and natural disasters. Higher percentiles indicate greater vulnerability. Tract-level scores are aggregated to this ZCTA via Census 2020 ZCTA→Tract crosswalk, weighted by land-area share. Source: atsdr.cdc.gov. Public domain.