Population & age
- Total population
- 1,805
- Median age
- 45.3
Alapaha, GA (31622)
Berrien County · Population 1,805
Fresh.Data current as of Apr 24, 2026
Alapaha, GA (ZIP 31622) sits in Berrien County. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: High Blood Pressure comes in above the national average at 44.6%. No NCES schools are mapped to this ZIP in the current dataset. 3 colleges and universities serve the area, with median in-state tuition of $6,124. 26% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $41,776 per worker, roughly 36% below the US average. FDIC counts just 1 bank branch in this ZIP (Summary of Deposits, 2024) — residents likely lean on neighboring ZIPs or online banking for most services. FEMA has issued 20 federal disaster declarations affecting this ZIP since 1974 — a high-frequency exposure profile. County Health Rankings reports 14,035 years of potential life lost per 100,000 (2025) — well above the national county median. Georgia levies a flat state income tax (top rate 5.39%); a household at the local median AGI of $56,145 would pay roughly $1,816/year before deductions. IRS migration data (2022-2023) shows a net gain of 579 residents (215 households) — the ZIP's primary county is growing. 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: median household income $47,500, fair market rent of $980 for a two-bedroom, and a typical home value of $188,007, down 6.2% 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
- 87.6%
- Black
- 11.7%
- Asian
- 0.0%
- Hispanic / Latino
- 0.6%
- Other / multi-racial
- 0.7%
Income & housing
- Median household income
- $47,500
- Median home value
- $94,100
Education
- Bachelor's degree or higher (age 25+)
- 15.0%
Employment
- Unemployment rate
- 7.0%
Housing
- Owner-occupied
- 566(73.7%)
- Renter-occupied
- 202(26.3%)
- Vacant units
- 180
- Built (median)
- 1986
Commute
- Public transit
- 0(0.0%)
- Work from home
- 45(5.5%)
- Avg commute
- 20.9 min
Economic wellbeing
- Below poverty line
- 477(26.4%)
- Uninsured
- 50(2.8%)
Digital access
- Broadband access
- 466(60.7%)
- No broadband
- 302(39.3%)
Language & nativity
- Foreign-born
- 18(1.0%)
- Non-English at home
- 28(1.7%)
Fair Market Rent
Fresh.HUD SAFMR · May 1, 2026Studio
$740
/month
1 Bed
$750
/month
2 Bed
$980
/month
3 Bed
$1,360
/month
4 Bed
$1,640
/month
HUD Fair Market Rents represent the 40th percentile of standard-quality rental housing in this area. FY2026 data.
Home values
Typical home value
$188,007
Zillow Home Value Index (ZHVI) · as of March 2026
Year-over-year change
-6.2%
vs. March 2025
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
135
Across 94 permitted buildings. Total construction value: $36.6M.
Single-family
91
67% of total units
Multifamily (2+ unit)
44
33% of total units
Single-family value
$31.2M
construction value
Multifamily value
$5.4M
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
730
Average AGI
$56,145
Avg property tax
—
EITC participation
26.0%
Income distribution
- $1 – $25,00034.2% · 250
- $25,000 – $50,00030.1% · 220
- $50,000 – $75,00013.7% · 100
- $75,000 – $100,0008.2% · 60
- $100,000 – $200,00013.7% · 100
- $200,000 or more0.0% · 0
Avg mortgage interest
—
Avg charitable contribution
$625
Avg capital gains
$2,577
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 $41.0M across all reported brackets.
Business & employment
Business establishments
24
Total employment
218
Annual payroll
$9.9M
Average annual pay
$45,619
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
$41,776
Average weekly wage
$803
Total employment
3,795
Total establishments
323
That is roughly 36% 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
4.4%
That is 0.4 percentage points above the US national unemployment rate of about 4.0%.
Labor force
8,587
Employed
8,212
Unemployed
375
Based on Berrien County, GA 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.
Banking access
FDIC-insured bank branches
1
Limited banking access
Only a handful of branches — residents may rely on neighboring ZIPs or online banking for most services.
Total deposits
$39.3M
across all branches in this ZIP
Distinct institutions
1
different banks operating here
Top banks by deposits in this ZIP
- 1.Bank of Alapaha$39.3M · 1 branch
Based on FDIC-insured branch offices as of June 30, 2024.
Source: FDIC Summary of Deposits (fdic.gov). Annual June-30 snapshot of every FDIC-insured branch and the deposits booked there. Figures cover all institutions reporting a branch address in this ZIP.
Federal Disaster Declarations
Federally Declared Disasters
20
Date Range
1974–2024
Most Recent Declaration
HURRICANE HELENE
Hurricane — declared September 30, 2024 (DR-4830)
Incident period: September 24, 2024 – October 30, 2024
Top Incident Types
- Hurricane8 (40%)
- Tropical Storm3 (15%)
- Biological2 (10%)
- Tornado2 (10%)
- Severe Storm2 (10%)
- Other3 (15%)
Individual Assistance
3
Direct help to disaster survivors
Households Program
5
Housing & temporary lodging support
Public Assistance
20
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
64.9°F
53.9° – 76°
Annual precipitation
48.2"
Diurnal range
22.1°F
Day-night swing
Heating · cooling days
2,079.8 · 2,082.4
Annual base 65°F
Nearest station: TIFTON, GA US, 17.1 miles from the centroid of Alapaha, GA (ZIP 31622)
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)
14,035
That is roughly 5,835 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
23%
of adults self-report
Poor physical health days
5.2
avg per adult per month
Poor mental health days
5.9
avg per adult per month
Uninsured
15.1%
of residents under 65
Primary care MDs
22
per 100,000 residents
Preventable hospital stays
4,434
per 100K Medicare enrollees
Food environment (0-10)
6.3
10 = best access & security
Exercise access
27%
residents near a facility
Flu vaccinated
29%
of Medicare enrollees
Low birth weight (under 2,500 g) accounts for 10.8% of live births in this county — an early-life health input that downstream outcomes track against.
Based on Berrien 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
Moderate food access challenges
20.0% of Berrien County, GA residents live more than 1 mile (urban) or 10 miles (rural) from the nearest supermarket.
Grocery stores
0.16
per 1,000 residents
Supercenters & clubs
—
per 1,000 residents
SNAP-authorized stores
1.21
accepting food benefits
Fast-food restaurants
0.46
per 1,000 residents
Among low-income residents, 10.4% 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 Berrien County, GA 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 · 25 reports
Property crime rate
—
per 100K residents · 124 reports
Homicide
0
Robbery
0
Burglary
36
Vehicle theft
19
County-level data for Berrien (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)
▲+579 people
+215 households • +$10.9M net AGI flow
Moved in
709households
1,541 people • $30.0M AGI
Moved out
494households
962 people • $19.0M AGI
Where new residents came from
- Lowndes County, GA — 104 households
- Tift County, GA — 72 households
- Cook County, GA — 47 households
- Lanier County, GA — 33 households
Where departing residents went
- Lowndes County, GA — 75 households
- Tift County, GA — 65 households
- Lanier County, GA — 31 households
- Cook County, GA — 27 households
Incoming households reported an average AGI of $42,264 versus departing households' $38,530.
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 Georgia
State-level rules that apply to every resident of ZIP 31622. Numbers reflect the most recent published year per source.
Tax rates
Income tax
5.39%
flat · 1 brackets
Sales tax (combined)
7.49%
State 4.00% · avg local 3.49%
Property tax (effective)
1.09%
Median $1,221/year
Tax burden rank
9 of 50
9.00% of personal income
For ZIP 31622: At this ZIP's median AGI of $56,145, the estimated state income tax (before deductions) runs about $1,816 per year. Applied to this ZIP's typical home value of $188,007, that works out to roughly $2,042/year in property tax.
Paid family leave
Program
No program
No program
Safety net
SNAP eligibility
130% 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 31622
Nearby ZIPs by distance
31749 (Enigma, 8.4 mi) · 31650 (Willacoochee, 10.6 mi) · 31639 (Nashville, 11 mi) · 31727 (11.5 mi) · 31774 (Ocilla, 13.9 mi) · 31637 (Lenox, 15.2 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
39.0%
6.0pp above the 33.0% national rate.
High Blood Pressure
44.6%
12.6pp above the 32.0% national rate.
Depression
22.8%
Tracks close to the 22.0% national rate.
Annual Checkup
78.9%
2.9pp above the 76.0% national rate.
Health Insurance
14.4%
Tracks close to the 13.0% national rate.
Diabetes
17.5%
6.5pp above the 11.0% national rate.
Colleges & universities nearby
Colleges in this area
3
Median in-state tuition
$6,124
Median earnings (10 yr)
$39,257
- 4-Year
Valdosta State University
Valdosta, GA · 31698
- In-state tuition
- $6,124
- Out-of-state tuition
- $17,836
- Acceptance rate
- 72.3%
- Graduation rate
- 42.0%
- Median earnings (10 yr)
- $49,361
- Median student debt
- $24,779
- 2-Year
Wiregrass Georgia Technical College
Valdosta, GA · 31602
- In-state tuition
- $3,480
- Out-of-state tuition
- $6,048
- Acceptance rate
- —
- Graduation rate
- 47.4%
- Median earnings (10 yr)
- $30,864
- Median student debt
- —
- 2-Year
Georgia Military College - Valdosta
Valdosta, GA · 31605
- In-state tuition
- $8,112
- Out-of-state tuition
- $8,112
- Acceptance rate
- —
- Graduation rate
- —
- Median earnings (10 yr)
- $39,257
- Median student debt
- $8,563
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
Alapaha, GA (ZIP 31622) sits in Berrien County. The page draws on 1 federal data feed retrieved Apr 24. Top health signal: High Blood Pressure comes in above the national average at 44.6%. No NCES schools are mapped to this ZIP in the current dataset. 3 colleges and universities serve the area, with median in-state tuition of $6,124. 26% of returns claim the Earned Income Tax Credit (IRS), a higher share than most ZIPs. BLS QCEW reports average annual pay of $41,776 per worker, roughly 36% below the US average. FDIC counts just 1 bank branch in this ZIP (Summary of Deposits, 2024) — residents likely lean on neighboring ZIPs or online banking for most services. FEMA has issued 20 federal disaster declarations affecting this ZIP since 1974 — a high-frequency exposure profile. County Health Rankings reports 14,035 years of potential life lost per 100,000 (2025) — well above the national county median. Georgia levies a flat state income tax (top rate 5.39%); a household at the local median AGI of $56,145 would pay roughly $1,816/year before deductions. IRS migration data (2022-2023) shows a net gain of 579 residents (215 households) — the ZIP's primary county is growing. 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: median household income $47,500, fair market rent of $980 for a two-bedroom, and a typical home value of $188,007, down 6.2% 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 22.8%. 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 31622
What is the obesity rate in ZIP 31622?
39.0%, which is 6.0 percentage points above the national average of 33.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the depression rate in ZIP 31622?
22.8%, which is 0.8 percentage points above the national average of 22.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the high blood pressure rate in ZIP 31622?
44.6%, which is 12.6 percentage points above the national average of 32.0% (CDC PLACES, retrieved Apr 24, 2026).
What is the population of ZIP 31622?
1,805 people live in ZIP 31622, with a median age of 45.3 (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the median household income in ZIP 31622?
$47,500 per year (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
Is ZIP 31622 mostly renters or homeowners?
In ZIP 31622, 73.7% of occupied housing units are owner-occupied and 26.3% are renter-occupied (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
How do people commute in ZIP 31622?
In ZIP 31622, 5.5% 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 31622?
26.4% of the population in ZIP 31622 lives below the federal poverty line (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What percentage of households in ZIP 31622 have broadband internet?
60.7% of households in ZIP 31622 have broadband internet access (Census ACS 5-Year 2022, retrieved Apr 30, 2026).
What is the typical home value in ZIP 31622?
The typical home value in ZIP 31622 is $188,007, down 6.2% from a year ago (Zillow Home Value Index, retrieved May 1, 2026).
Are home values rising or falling in ZIP 31622?
Home values are down 6.2% over the past year (Zillow Home Value Index, retrieved May 1, 2026).
What is the average household income in ZIP 31622?
The average Adjusted Gross Income reported on tax returns from ZIP 31622 (Alapaha, GA) is $56,145 per return (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How much do homeowners pay in property tax in ZIP 31622?
Tax returns from ZIP 31622 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 31622 earn over $200,000?
0.0% of tax returns from ZIP 31622 (Alapaha, GA) report Adjusted Gross Income of $200,000 or more (IRS SOI Tax Year 2022, retrieved May 2, 2026).
How many businesses are in ZIP 31622?
As of 2022, 24 business establishments operated in ZIP 31622 employing 218 workers (Census ZIP Business Patterns, retrieved May 3, 2026).
What is the average salary in ZIP 31622?
The average annual pay across all local establishments in ZIP 31622 is $45,619, based on Census ZIP Business Patterns 2022 data (retrieved May 3, 2026).
How vulnerable is ZIP 31622 to disasters and public health emergencies?
According to the CDC Social Vulnerability Index (2022), ZIP 31622 ranks in the 56th percentile nationally for social vulnerability — a high vulnerability profile (retrieved May 3, 2026).
What is the biggest vulnerability factor in ZIP 31622?
Socioeconomic Status is the highest-scoring CDC SVI theme for ZIP 31622, ranking in the 78th percentile nationally (CDC/ATSDR Social Vulnerability Index 2022, retrieved May 3, 2026).
How many federally declared disasters has ZIP 31622 experienced?
FEMA has recorded 20 federal disaster declarations affecting ZIP 31622 between 1974–2024 (FEMA OpenFEMA Disaster Declarations, retrieved May 3, 2026).
What kinds of disasters most often hit ZIP 31622?
Hurricane is the most common federally declared disaster type affecting ZIP 31622, accounting for 8 of 20 declarations (40%, FEMA OpenFEMA, retrieved May 3, 2026).
What was the most recent disaster declared for ZIP 31622?
The most recent FEMA disaster declaration affecting ZIP 31622 was "HURRICANE HELENE" — a hurricane declared in 2024 (DR-4830) (FEMA OpenFEMA, retrieved May 3, 2026).
What colleges are near ZIP 31622?
3 colleges and universities are listed near ZIP 31622 by the U.S. Department of Education College Scorecard, including Valdosta State University, Wiregrass Georgia Technical College, and Georgia Military College - Valdosta (retrieved May 2, 2026).
What is the average tuition at colleges near ZIP 31622?
Median in-state tuition across 3 nearby institutions is $6,124 (College Scorecard, retrieved May 2, 2026).
What do graduates earn from colleges near ZIP 31622?
Graduates of nearby colleges earn a median of $39,257 ten years after entry (College Scorecard, retrieved May 2, 2026).
What is the climate like in ZIP 31622?
ZIP 31622 has an average annual temperature of 64.9°F and 48.2" of annual precipitation based on the TIFTON, GA US weather station 17.1 miles from the ZIP centroid (NOAA 1991–2020 Climate Normals, retrieved May 8, 2026).
What taxes apply in ZIP 31622?
Georgia has a flat income tax with a top rate of 5.39%. Households at the local median AGI of $56,145 would pay roughly $1,816 in state income tax annually (estimated, before deductions). Combined sales tax: 7.49% (Tax Foundation 2025).
Does Georgia have paid family leave?
Georgia has no state paid family leave program (Bipartisan Policy Center 2026).
What data is available for ZIP 31622?
This page covers health outcomes from CDC PLACES (40 metrics), 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 (3 institutions), 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 (20 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). 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 (20 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 31622
Nearby ZIPs by distance
31749 (Enigma, 8.4 mi) · 31650 (Willacoochee, 10.6 mi) · 31639 (Nashville, 11 mi) · 31727 (11.5 mi) · 31774 (Ocilla, 13.9 mi) · 31637 (Lenox, 15.2 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 31622?
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
56th percentile
High Vulnerability
Based on 4 census tracts, population 2,387
Vulnerability Themes
Households Without Vehicle
49
Persons with Disability
399
Without HS Diploma
290
Without Health Insurance
674
Adults Age 65+
557
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.