Population & age
- Total population
- 270
- Median age
- 44.6
Santa Anna, TX (78591)
Starr County · Population 270
Fresh.Data current as of Apr 24, 2026
Santa Anna, TX (ZIP 78591) sits in Starr County. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: Health Insurance comes in above the national average at 31.4%. No NCES schools are mapped to this ZIP in the current dataset. 10 colleges and universities serve the area, with median in-state tuition of $4,920. 20% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $39,754 per worker, roughly 39% below the US average. BLS LAUS records a 9.5% county unemployment rate (2024) — about 5.5 points above the US average and a labor-market distress signal. CDC's Social Vulnerability Index places this ZIP in the 78th percentile nationally — a highly vulnerable community profile. FEMA has issued 23 federal disaster declarations affecting this ZIP since 1967 — a high-frequency exposure profile. 25.0% of residents under 65 lack health insurance per the 2025 County Health Rankings — a notable access gap. 33.9% of residents in this county are flagged low-access by USDA's 2025 Food Environment Atlas — a notable supermarket-access gap. Texas has no state income tax, saving the local median household (AGI $51,720) approximately $2,379/year vs the US average effective state tax rate. IRS migration data (2022-2023) shows a net loss of 319 residents (216 households) — the ZIP's primary county is shrinking. Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: fair market rent of $970 for a two-bedroom, a low 3.3% poverty rate, and a median home value of $256,800. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
Loading map…
Demographics
Race & ethnicity
- White
- 74.8%
- Black
- 0.0%
- Asian
- 0.0%
- Hispanic / Latino
- 100.0%
- Other / multi-racial
- 25.2%
Income & housing
- Median home value
- $256,800
Education
- Bachelor's degree or higher (age 25+)
- 11.7%
Employment
- Unemployment rate
- 1.9%
Housing
- Owner-occupied
- 118(96.7%)
- Renter-occupied
- 4(3.3%)
- Vacant units
- 124
- Built (median)
- 1991
Commute
- Public transit
- 0(0.0%)
- Work from home
- 5(3.3%)
- Avg commute
- 45.5 min
Economic wellbeing
- Below poverty line
- 9(3.3%)
- Uninsured
- 0(0.0%)
Digital access
- Broadband access
- 76(62.3%)
- No broadband
- 46(37.7%)
Language & nativity
- Foreign-born
- 20(7.4%)
- Non-English at home
- 107(39.6%)
Fair Market Rent
Fresh.HUD SAFMR · May 1, 2026Studio
$740
/month
1 Bed
$740
/month
2 Bed
$970
/month
3 Bed
$1,350
/month
4 Bed
$1,490
/month
HUD Fair Market Rents represent the 40th percentile of standard-quality rental housing in this area. FY2026 data.
New housing construction
New housing units permitted
0
Across 0 permitted buildings. Total construction value: $0.
Single-family
0
Multifamily (2+ unit)
0
Single-family value
$0
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
150
Average AGI
$51,720
Avg property tax
—
EITC participation
20.0%
Income distribution
- $1 – $25,00033.3% · 50
- $25,000 – $50,00026.7% · 40
- $50,000 – $75,00020.0% · 30
- $75,000 – $100,0000.0% · 0
- $100,000 – $200,00020.0% · 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 $7.8M across all reported brackets.
Employment & wages
Average annual pay
$39,754
Average weekly wage
$765
Total employment
14,746
Total establishments
666
That is roughly 39% 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
9.5%
That is 5.5 percentage points above the US national unemployment rate of about 4.0%.
Labor force
25,070
Employed
22,681
Unemployed
2,389
Based on Starr County, TX 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.
Federal Disaster Declarations
Federally Declared Disasters
23
Date Range
1967–2025
Most Recent Declaration
SEVERE STORMS AND FLOODING
Flood — declared May 21, 2025 (DR-4871)
Incident period: March 26, 2025 – March 28, 2025
Top Incident Types
- Hurricane10 (43%)
- Severe Storm3 (13%)
- Flood2 (9%)
- Severe Ice Storm2 (9%)
- Biological2 (9%)
- Other4 (17%)
Individual Assistance
5
Direct help to disaster survivors
Households Program
4
Housing & temporary lodging support
Public Assistance
19
Repair of public facilities & roads
Hazard Mitigation
9
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
74.4°F
62° – 86.7°
Annual precipitation
22.5"
Annual snowfall
0.1"
Heating · cooling days
795.8 · 4,232
Annual base 65°F
Nearest station: RIO GRANDE CITY, TX US, 24.2 miles from the centroid of Santa Anna, TX (ZIP 78591)
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)
9,793
That is roughly 1,593 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
38%
of adults self-report
Poor physical health days
6.0
avg per adult per month
Poor mental health days
6.1
avg per adult per month
Uninsured
25.0%
of residents under 65
Primary care MDs
26
per 100,000 residents
Preventable hospital stays
4,460
per 100K Medicare enrollees
Food environment (0-10)
3.0
10 = best access & security
Exercise access
62%
residents near a facility
Flu vaccinated
30%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 9.9% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Starr 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
Significant food access concerns
33.9% of Starr County, TX residents live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket.
Grocery stores
0.12
per 1,000 residents
Supercenters & clubs
—
per 1,000 residents
SNAP-authorized stores
1.57
accepting food benefits
Fast-food restaurants
0.58
per 1,000 residents
Among low-income residents, 23.7% 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 Starr County, TX 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).
Safety
FBI publishes crime data at the county level. Numbers below cover the primary county that contains this ZIP. Rates are per 100,000 residents in the area covered by reporting agencies.
Violent crime rate
—
per 100K residents · 136 reports
Property crime rate
—
per 100K residents · 227 reports
Homicide
5
Robbery
5
Burglary
71
Vehicle theft
34
County-level data for Starr (2024)
Source: U.S. Federal Bureau of Investigation, Uniform Crime Reporting Program (cde.ucr.cjis.gov). Public domain. Coverage varies by reporting agency; areas with partial agency coverage may understate true crime totals.
Who’s moving in and out
Net migration (2022-2023)
▼−319 people
−216 households • −$10.2M net AGI flow
Moved in
747households
1,523 people • $27.5M AGI
Moved out
963households
1,842 people • $37.6M AGI
Where new residents came from
- Hidalgo County, TX — 261 households
- Harris County, TX — 52 households
- Bexar County, TX — 22 households
Where departing residents went
- Hidalgo County, TX — 373 households
- Bexar County, TX — 44 households
- Harris County, TX — 38 households
- Travis County, TX — 20 households
Incoming households reported an average AGI of $36,799 versus departing households' $39,092.
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 Texas
State-level rules that apply to every resident of ZIP 78591. Numbers reflect the most recent published year per source.
Tax rates
Income tax
None
No state income tax
Sales tax (combined)
8.20%
State 6.25% · avg local 1.95%
Property tax (effective)
1.42%
Median $1,254/year
Tax burden rank
4 of 50
8.40% of personal income
For ZIP 78591: A household at this ZIP's median AGI of $51,720 keeps approximately $2,379 more annually than residents of the typical income-tax state. Applied to this ZIP's typical home value of $256,800, that works out to roughly $3,655/year in property tax.
Paid family leave
Program
Voluntary (private insurance framework)
Voluntary (private insurance framework)
Safety net
SNAP eligibility
165% FPL
Broad-Based Categorical Eligibility (raises gross income limit above federal 130% floor). Asset limit $5,000.
Sources: Tax Foundation (state tax rates & brackets), Bipartisan Policy Center (paid family leave), USDA FNS (SNAP categorical eligibility).
Other ZIPs near 78591
Other ZIPs in Santa Anna
Nearby ZIPs by distance
78536 (Delmita, 6.7 mi) · 78588 (San Isidro, 11.7 mi) · 78582 (Rio Grande City, 13.8 mi) · 78563 (Linn, 18.5 mi) · 78541 (Edinburg, 21.4 mi) · 78595 (Sullivan City, 22.4 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
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
42.3%
9.3pp above the 33.0% national rate.
High Blood Pressure
45.1%
13.1pp above the 32.0% national rate.
Depression
16.0%
6.0pp below the 22.0% national rate.
Annual Checkup
77.5%
Tracks close to the 76.0% national rate.
Health Insurance
31.4%
18.4pp above the 13.0% national rate.
Diabetes
24.4%
13.4pp above the 11.0% national rate.
Colleges & universities nearby
Colleges in this area
10
Median in-state tuition
$4,920
Median earnings (10 yr)
$31,102
- 4-Year
The University of Texas Rio Grande Valley
Edinburg, TX · 78539
- In-state tuition
- $9,987
- Out-of-state tuition
- $19,827
- Acceptance rate
- 94.2%
- Graduation rate
- 50.1%
- Median earnings (10 yr)
- $49,620
- Median student debt
- $12,950
- 4-Year
South Texas College
McAllen, TX · 78501
- In-state tuition
- $4,920
- Out-of-state tuition
- $7,620
- Acceptance rate
- —
- Graduation rate
- 27.4%
- Median earnings (10 yr)
- $36,788
- Median student debt
- —
- 2-Year
Texas Southmost College
Brownsville, TX · 78520
- In-state tuition
- $3,148
- Out-of-state tuition
- $4,948
- Acceptance rate
- —
- Graduation rate
- 28.2%
- Median earnings (10 yr)
- $41,900
- Median student debt
- $9,000
- 2-Year
Rio Grande Valley College
Pharr, TX · 78577
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 73.4%
- Median earnings (10 yr)
- —
- Median student debt
- $12,359
- 2-Year
The College of Health Care Professions-McAllen Campus
McAllen, TX · 78504
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 73.1%
- Median earnings (10 yr)
- $33,070
- Median student debt
- $9,500
- 2-Year
Southern Careers Institute-Brownsville
Brownsville, TX · 78520
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 69.5%
- Median earnings (10 yr)
- $27,035
- Median student debt
- $8,708
- 2-Year
Southern Careers Institute-Pharr
Pharr, TX · 78577
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 57.8%
- Median earnings (10 yr)
- $27,035
- Median student debt
- $8,708
- Certificate
Miller-Motte College-STVT-McAllen
McAllen, TX · 78503
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 80.5%
- Median earnings (10 yr)
- $31,102
- Median student debt
- $15,917
- 2-Year
Southern Careers Institute-Harlingen
Harlingen, TX · 78550
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 60.1%
- Median earnings (10 yr)
- $27,035
- Median student debt
- $8,708
- Certificate
South Texas Vocational Technical Institute-Weslaco
Weslaco, TX · 78599
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 79.2%
- Median earnings (10 yr)
- $31,102
- Median student debt
- $15,917
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
Santa Anna, TX (ZIP 78591) sits in Starr County. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: Health Insurance comes in above the national average at 31.4%. No NCES schools are mapped to this ZIP in the current dataset. 10 colleges and universities serve the area, with median in-state tuition of $4,920. 20% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $39,754 per worker, roughly 39% below the US average. BLS LAUS records a 9.5% county unemployment rate (2024) — about 5.5 points above the US average and a labor-market distress signal. CDC's Social Vulnerability Index places this ZIP in the 78th percentile nationally — a highly vulnerable community profile. FEMA has issued 23 federal disaster declarations affecting this ZIP since 1967 — a high-frequency exposure profile. 25.0% of residents under 65 lack health insurance per the 2025 County Health Rankings — a notable access gap. 33.9% of residents in this county are flagged low-access by USDA's 2025 Food Environment Atlas — a notable supermarket-access gap. Texas has no state income tax, saving the local median household (AGI $51,720) approximately $2,379/year vs the US average effective state tax rate. IRS migration data (2022-2023) shows a net loss of 319 residents (216 households) — the ZIP's primary county is shrinking. Healthcare access is the area's quieter strength; school options sit on the lighter side, so families may find themselves looking at districts a few ZIPs over. Notable: fair market rent of $970 for a two-bedroom, a low 3.3% poverty rate, and a median home value of $256,800. 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 lower the national rate at 16.0%. 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 78591
What is the obesity rate in ZIP 78591?
42.3%, which is 9.3 percentage points above the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the depression rate in ZIP 78591?
16.0%, which is 6.0 percentage points below the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the high blood pressure rate in ZIP 78591?
45.1%, which is 13.1 percentage points above the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the population of ZIP 78591?
270 people live in ZIP 78591, with a median age of 44.6 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
Is ZIP 78591 mostly renters or homeowners?
In ZIP 78591, 96.7% of occupied housing units are owner-occupied and 3.3% are renter-occupied (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How do people commute in ZIP 78591?
In ZIP 78591, 3.3% 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 78591?
3.3% of the population in ZIP 78591 lives below the federal poverty line (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What percentage of households in ZIP 78591 have broadband internet?
62.3% of households in ZIP 78591 have broadband internet access (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the average household income in ZIP 78591?
The average Adjusted Gross Income reported on tax returns from ZIP 78591 (Santa Anna, TX) is $51,720 per return (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How much do homeowners pay in property tax in ZIP 78591?
Tax returns from ZIP 78591 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 78591 earn over $200,000?
0.0% of tax returns from ZIP 78591 (Santa Anna, TX) report Adjusted Gross Income of $200,000 or more (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How vulnerable is ZIP 78591 to disasters and public health emergencies?
According to the CDC Social Vulnerability Index (2022), ZIP 78591 ranks in the 78th percentile nationally for social vulnerability — a very high vulnerability profile (retrieved May 3, 2026).
What is the biggest vulnerability factor in ZIP 78591?
Racial & Ethnic Minority Status is the highest-scoring CDC SVI theme for ZIP 78591, ranking in the 100th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
How many federally declared disasters has ZIP 78591 experienced?
FEMA has recorded 23 federal disaster declarations affecting ZIP 78591 between 1967–2025 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
What kinds of disasters most often hit ZIP 78591?
Hurricane is the most common federally declared disaster type affecting ZIP 78591, accounting for 10 of 23 declarations (43%, FEMA OpenFEMA, retrieved May 3, 2026).
What was the most recent disaster declared for ZIP 78591?
The most recent FEMA disaster declaration affecting ZIP 78591 was "SEVERE STORMS AND FLOODING" — a flood declared in 2025 (DR-4871) (FEMA OpenFEMA, retrieved May 3, 2026).
What colleges are near ZIP 78591?
10 colleges and universities are listed near ZIP 78591 by the U.S. Department of Education College Scorecard, including The University Of Texas Rio Grande Valley, South Texas College, and Texas Southmost College (retrieved May 2, 2026).
What is the average tuition at colleges near ZIP 78591?
Median in-state tuition across 10 nearby institutions is $4,920 (College Scorecard, retrieved May 2, 2026).
What do graduates earn from colleges near ZIP 78591?
Graduates of nearby colleges earn a median of $31,102 ten years after entry (College Scorecard, retrieved May 2, 2026).
What is the climate like in ZIP 78591?
ZIP 78591 has an average annual temperature of 74.4°F and 22.5" of annual precipitation based on the RIO GRANDE CITY, TX US weather station 24.2 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
What taxes apply in ZIP 78591?
Texas has no state income tax. For a household earning the local median AGI of $51,720, this saves approximately $2,379 per year compared to the national average effective state tax rate. The combined state and local sales tax rate is 8.20% (Tax Foundation 2025).
Does Texas have paid family leave?
Texas runs an active paid family leave program offering up to — weeks of paid leave per year (Bipartisan Policy Center 2026).
What data is available for ZIP 78591?
This page covers health outcomes from CDC PLACES (33 metrics), demographics from the Census ACS 5-Year (2022), colleges from the U.S. Department of Education College Scorecard (10 institutions), income & tax statistics from the IRS SOI (Tax Year 2022), social vulnerability scores from the CDC/ATSDR SVI (2022), federal disaster declarations from FEMA OpenFEMA (23 on record), climate normals from NOAA NCEI (1991-2020), county-level crime data from the FBI Crime Data Explorer (2024), 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. Demographics retrieved Apr 30, 2026 from Census ACS 5-Year (2022). 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). Social vulnerability scores retrieved May 3, 2026 from CDC/ATSDR SVI (2022). Federal disaster declarations retrieved May 3, 2026 from FEMA OpenFEMA (23 on record). Climate normals retrieved May 8, 2026 from NOAA NCEI (1991-2020). County-level crime data retrieved May 4, 2026 from the FBI Crime Data Explorer (2024). State-level tax rates retrieved 2026-05-05 15:58:22.284+00 from the Tax Foundation.
Other ZIPs near 78591
Other ZIPs in Santa Anna
Nearby ZIPs by distance
78536 (Delmita, 6.7 mi) · 78588 (San Isidro, 11.7 mi) · 78582 (Rio Grande City, 13.8 mi) · 78563 (Linn, 18.5 mi) · 78541 (Edinburg, 21.4 mi) · 78595 (Sullivan City, 22.4 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 78591?
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
78th percentile
Very High Vulnerability
Based on 1 census tract, population 297
Vulnerability Themes
Households Without Vehicle
5
Limited English Speakers
25
Persons with Disability
62
Without HS Diploma
32
Without Health Insurance
43
Adults Age 65+
51
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.