Population & age
- Total population
- 210
- Median age
- 21.4
Austin, TX (78712)
Travis County · Austin-Round Rock-San Marcos, TX · Population 210
Fresh.Data current as of Apr 24, 2026
Austin, TX (ZIP 78712) sits in Travis County within the Austin-Round Rock-San Marcos metro area. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: Annual Checkup comes in above the national average at 68.2%. 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 $23,500. BLS QCEW puts average annual pay at $96,267 per worker — about 47% above the US average and a clear high-wage signal. The CDC SVI flags housing & transportation (90th percentile) as this ZIP's standout vulnerability dimension, sitting well above its overall 57th-percentile score. FEMA has issued 37 federal disaster declarations affecting this ZIP since 1991 — a high-frequency exposure profile. 26.4% 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 (Tax Foundation 2025). IRS migration data (2022-2023) shows a net loss of 9,987 residents (517 households) — the ZIP's primary county is shrinking. 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: fair market rent of $2,150 for a two-bedroom. 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
- 74.3%
- Black
- 12.9%
- Asian
- 12.9%
- Hispanic / Latino
- 18.6%
Education
- Bachelor's degree or higher (age 25+)
- 100.0%
Employment
- Unemployment rate
- 0.0%
Housing
- Owner-occupied
- 0
- Renter-occupied
- 0
- Vacant units
- 0
Commute
- Public transit
- 0(0.0%)
- Work from home
- 0(0.0%)
- Avg commute
- 13.3 min
Economic wellbeing
- Below poverty line
- 0
- Uninsured
- 0(0.0%)
Digital access
- Broadband access
- 0
Language & nativity
- Foreign-born
- 27(12.9%)
- Non-English at home
- 47(22.4%)
Fair Market Rent
Fresh.HUD SAFMR · May 1, 2026Studio
$1,710
/month
1 Bed
$1,820
/month
2 Bed
$2,150
/month
3 Bed
$2,730
/month
4 Bed
$3,210
/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
16,990
Across 4,980 permitted buildings. Total construction value: $3.04B.
Single-family
4,559
27% of total units
Multifamily (2+ unit)
12,431
73% of total units
Single-family value
$1.60B
construction value
Multifamily value
$1.43B
construction value
Apartment construction (5+ unit buildings) accounts for 71% of new units this year — the area is densifying, not just adding single-family stock.
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.
Business & employment
Business establishments
34
Total employment
327
Annual payroll
$19.7M
Average annual pay
$60,116
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
$96,267
Average weekly wage
$1,851
Total employment
903,333
Total establishments
51,913
That is roughly 47% above 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
3.5%
That is 0.5 percentage points below the US national unemployment rate of about 4.0%.
Labor force
849,812
Employed
820,055
Unemployed
29,757
Based on Travis 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.
Public transit
FTA tracks transit service at the urbanized-area level. Numbers below reflect the agencies and modes serving the area that contains this ZIP, not stop-level coverage.
Service status
Available
Austin, TX
Reporting agencies
2
Largest: Capital Metropolitan Transportation Authority
Annual ridership
—
unlinked trips · 2024
Source: U.S. Federal Transit Administration, National Transit Database (transit.dot.gov). Public domain.
Alternative-fuel stations
Public EV charging stations
10
Strong EV charging coverage
A robust public-charging footprint, including multiple networks. EV ownership is straightforward even without a home charger.
Level 2 ports
20
AC charging — workplace, retail, home
DC Fast ports
0
Highway-class fast charging
Charging networks
- ChargePoint Network
Active public stations only. Snapshot taken 2026; AFDC's underlying registry refreshes continuously as stations open and close.
Source: U.S. Department of Energy via NREL (afdc.energy.gov). Per-ZIP counts of active public alternative-fuel stations (electric, hydrogen, propane, CNG, biodiesel, E85, LNG, renewable diesel) and EV charging-port totals.
Federal Disaster Declarations
Federally Declared Disasters
37
Date Range
1991–2025
Most Recent Declaration
SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING
Flood — declared July 6, 2025 (DR-4879)
Incident period: July 2, 2025 – July 18, 2025
Top Incident Types
- Fire11 (30%)
- Hurricane8 (22%)
- Flood7 (19%)
- Severe Storm5 (14%)
- Severe Ice Storm2 (5%)
- Other4 (11%)
Individual Assistance
5
Direct help to disaster survivors
Households Program
8
Housing & temporary lodging support
Public Assistance
32
Repair of public facilities & roads
Hazard Mitigation
16
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
70°F
59.4° – 80.5°
Annual precipitation
36.3"
Annual snowfall
0.2"
Heating · cooling days
1,442.4 · 3,289.9
Annual base 65°F
Nearest station: AUSTIN-CAMP MABRY, TX US, 3 miles from the centroid of Austin, TX (ZIP 78712)
Source: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals (ncei.noaa.gov). Public domain.
Air quality
Median daily AQI
52
ModerateGood 156dModerate 203dUSG 7d
Peak AQI (2024)
141
Unhealthy for Sensitive Groups
Primary pollutant
PM2.5
235 days as main pollutant
Days measured
366
Based on Travis County data (2024).
Source: U.S. Environmental Protection Agency, Air Quality System (epa.gov). Public domain. Only counties with EPA AQS monitoring stations appear here (~30% of US counties); rural ZIPs whose primary county has no monitor will not show this section.
Community health profile
Years of potential life lost (per 100K)
5,698
That is roughly 2,502 years per 100,000 below 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
17%
of adults self-report
Poor physical health days
3.5
avg per adult per month
Poor mental health days
5.3
avg per adult per month
Uninsured
12.8%
of residents under 65
Primary care MDs
84
per 100,000 residents
Preventable hospital stays
2,306
per 100K Medicare enrollees
Food environment (0-10)
7.7
10 = best access & security
Exercise access
92%
residents near a facility
Flu vaccinated
54%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 7.5% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Travis 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
26.4% of Travis 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
0.02
per 1,000 residents
SNAP-authorized stores
0.52
accepting food benefits
Fast-food restaurants
0.79
per 1,000 residents
Among low-income residents, 5.3% 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 Travis 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 · 834 reports
Property crime rate
—
per 100K residents · 3,952 reports
Homicide
5
Robbery
68
Burglary
706
Vehicle theft
829
County-level data for Travis (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)
▼−9,987 people
+517 households • −$302.7M net AGI flow
Moved in
61,108households
87,134 people • $6.0B AGI
Moved out
60,591households
97,121 people • $6.3B AGI
Where new residents came from
- Williamson County, TX — 8,377 households
- Harris County, TX — 3,073 households
- Hays County, TX — 2,606 households
- Bexar County, TX — 1,968 households
- Dallas County, TX — 1,674 households
Where departing residents went
- Williamson County, TX — 12,394 households
- Hays County, TX — 5,064 households
- Harris County, TX — 2,367 households
- Bexar County, TX — 1,815 households
- Bastrop County, TX — 1,798 households
Incoming households reported an average AGI of $97,833 versus departing households' $103,664.
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 78712. 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
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 78712
Other ZIPs in Austin
Nearby ZIPs by distance
78705 (Austin, 0.8 mi) · 78701 (Austin, 1.1 mi) · 78722 (Austin, 1.2 mi) · 78702 (Austin, 1.8 mi) · 78751 (Austin, 2 mi) · 78703 (Austin, 2.1 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
33.9%
Tracks close to the 33.0% national rate.
High Blood Pressure
26.7%
5.3pp below the 32.0% national rate.
Depression
21.9%
Tracks close to the 22.0% national rate.
Annual Checkup
68.2%
7.8pp below the 76.0% national rate.
Health Insurance
17.4%
4.4pp above the 13.0% national rate.
Diabetes
11.9%
Tracks close to the 11.0% national rate.
Colleges & universities nearby
Colleges in this area
10
Median in-state tuition
$23,500
Median earnings (10 yr)
$43,057
- 4-Year
The University of Texas at Austin
Austin, TX · 78705
- In-state tuition
- $11,688
- Out-of-state tuition
- $44,908
- Acceptance rate
- 26.6%
- Graduation rate
- 88.3%
- Median earnings (10 yr)
- $75,121
- Median student debt
- $20,500
- 4-Year
Austin Community College District
Austin, TX · 78752
- In-state tuition
- $2,550
- Out-of-state tuition
- $10,590
- Acceptance rate
- —
- Graduation rate
- 19.1%
- Median earnings (10 yr)
- $43,177
- Median student debt
- $10,499
- 4-Year
Saint Edward's University
Austin, TX · 78704
- In-state tuition
- $51,384
- Out-of-state tuition
- $51,384
- Acceptance rate
- 81.4%
- Graduation rate
- 63.4%
- Median earnings (10 yr)
- $58,826
- Median student debt
- $24,803
- 2-Year
Universal Technical Institute-West Texas
Austin, TX · 78753
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 74.7%
- Median earnings (10 yr)
- $51,222
- Median student debt
- $14,267
- 4-Year
Concordia University Texas
Austin, TX · 78726
- In-state tuition
- $23,500
- Out-of-state tuition
- $23,500
- Acceptance rate
- 91.3%
- Graduation rate
- 42.3%
- Median earnings (10 yr)
- $60,883
- Median student debt
- $21,852
- 4-Year
Huston-Tillotson University
Austin, TX · 78702
- In-state tuition
- $26,709
- Out-of-state tuition
- $26,709
- Acceptance rate
- 39.1%
- Graduation rate
- 34.9%
- Median earnings (10 yr)
- $42,937
- Median student debt
- $30,750
- 2-Year
The College of Health Care Professions-Austin
Austin, TX · 78723
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 57.6%
- Median earnings (10 yr)
- $38,922
- Median student debt
- $9,120
- 2-Year
Southern Careers Institute-Austin
Austin, TX · 78744
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 52.2%
- Median earnings (10 yr)
- $27,035
- Median student debt
- $8,708
- Certificate
Avenue Five Institute
Austin, TX · 78757
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 79.1%
- Median earnings (10 yr)
- $30,280
- Median student debt
- $7,917
- 2-Year
Auguste Escoffier School of Culinary Arts-Austin
Austin, TX · 78752
- In-state tuition
- —
- Out-of-state tuition
- —
- Acceptance rate
- —
- Graduation rate
- 62.5%
- Median earnings (10 yr)
- $36,330
- Median student debt
- $16,000
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
Austin, TX (ZIP 78712) sits in Travis County within the Austin-Round Rock-San Marcos metro area. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: Annual Checkup comes in above the national average at 68.2%. 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 $23,500. BLS QCEW puts average annual pay at $96,267 per worker — about 47% above the US average and a clear high-wage signal. The CDC SVI flags housing & transportation (90th percentile) as this ZIP's standout vulnerability dimension, sitting well above its overall 57th-percentile score. FEMA has issued 37 federal disaster declarations affecting this ZIP since 1991 — a high-frequency exposure profile. 26.4% 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 (Tax Foundation 2025). IRS migration data (2022-2023) shows a net loss of 9,987 residents (517 households) — the ZIP's primary county is shrinking. 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: fair market rent of $2,150 for a two-bedroom. Every figure on this page links to its underlying federal dataset with a retrieval date so you can audit the freshness yourself.
Both surfaces skew lighter than national averages. That isn’t a verdict — small-area estimates compress real neighborhood-level texture, and a single ZIP reading can miss a district line or a hospital corridor sitting just outside it. Treat this as a starting point for fieldwork, not a conclusion.
One concrete reading worth keeping: Depression prevalence sits near the national rate at 21.9%. 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 78712
What is the obesity rate in ZIP 78712?
33.9%, which is 0.9 percentage points above the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the depression rate in ZIP 78712?
21.9%, which is 0.1 percentage points below the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the high blood pressure rate in ZIP 78712?
26.7%, which is 5.3 percentage points below the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the population of ZIP 78712?
210 people live in ZIP 78712, with a median age of 21.4 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How do people commute in ZIP 78712?
In ZIP 78712, 0.0% of workers work from home. Public transit is used by 0.0% of commuters (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How many businesses are in ZIP 78712?
As of 2022, 34 business establishments operated in ZIP 78712 employing 327 workers (Census ZIP Business Patterns, retrieved May 3, 2026).
What is the average salary in ZIP 78712?
The average annual pay across all local establishments in ZIP 78712 is $60,116, based on Census ZIP Business Patterns 2022 data (retrieved May 3, 2026).
How vulnerable is ZIP 78712 to disasters and public health emergencies?
According to the CDC Social Vulnerability Index (2022), ZIP 78712 ranks in the 57th percentile nationally for social vulnerability — a high vulnerability profile (retrieved May 3, 2026).
What is the biggest vulnerability factor in ZIP 78712?
Housing Type & Transportation is the highest-scoring CDC SVI theme for ZIP 78712, ranking in the 90th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
How many federally declared disasters has ZIP 78712 experienced?
FEMA has recorded 37 federal disaster declarations affecting ZIP 78712 between 1991–2025 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
What kinds of disasters most often hit ZIP 78712?
Fire is the most common federally declared disaster type affecting ZIP 78712, accounting for 11 of 37 declarations (30%, FEMA OpenFEMA, retrieved May 3, 2026).
What was the most recent disaster declared for ZIP 78712?
The most recent FEMA disaster declaration affecting ZIP 78712 was "SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING" — a flood declared in 2025 (DR-4879) (FEMA OpenFEMA, retrieved May 3, 2026).
What colleges are near ZIP 78712?
10 colleges and universities are listed near ZIP 78712 by the U.S. Department of Education College Scorecard, including The University Of Texas At Austin, Austin Community College District, and Saint Edward'S University (retrieved May 2, 2026).
What is the average tuition at colleges near ZIP 78712?
Median in-state tuition across 10 nearby institutions is $23,500 (College Scorecard, retrieved May 2, 2026).
What do graduates earn from colleges near ZIP 78712?
Graduates of nearby colleges earn a median of $43,057 ten years after entry (College Scorecard, retrieved May 2, 2026).
What is the climate like in ZIP 78712?
ZIP 78712 has an average annual temperature of 70.0°F and 36.3" of annual precipitation based on the AUSTIN-CAMP MABRY, TX US weather station 3.0 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
Does ZIP 78712 have public transit?
Yes — ZIP 78712 is part of the Austin, TX urbanized area, primarily served by Capital Metropolitan Transportation Authority (National Transit Database 2024, retrieved May 4, 2026).
What taxes apply in ZIP 78712?
Texas has no state income tax. 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 78712?
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), local business & employment from Census ZIP Business Patterns (2022), social vulnerability scores from the CDC/ATSDR SVI (2022), federal disaster declarations from FEMA OpenFEMA (37 on record), climate normals from NOAA NCEI (1991-2020), county-level crime data from the FBI Crime Data Explorer (2024), public transit coverage from the National Transit Database (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. 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 (37 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). Transit coverage retrieved May 4, 2026 from the National Transit Database (2024). State-level tax rates retrieved 2026-05-05 15:58:22.284+00 from the Tax Foundation.
Other ZIPs near 78712
Other ZIPs in Austin
Nearby ZIPs by distance
78705 (Austin, 0.8 mi) · 78701 (Austin, 1.1 mi) · 78722 (Austin, 1.2 mi) · 78702 (Austin, 1.8 mi) · 78751 (Austin, 2 mi) · 78703 (Austin, 2.1 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 78712?
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
57th percentile
High Vulnerability
Based on 5 census tracts, population 5,993
Vulnerability Themes
Households Without Vehicle
111
Limited English Speakers
76
Persons with Disability
397
Without HS Diploma
37
Without Health Insurance
686
Adults Age 65+
116
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.