Postal Codes

99737 ZIP Code

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ZIP code 99737 covers Delta Junction, Alaska, with a population of about 4,659 and a median household income of $90,274.

Population
4,6591 per square mile
Median age
36.42.3 points below the US average
Median household income
$90,274about the Alaska median
Poverty rate
9.8%2.6 points below the US average
Typical home value
$318,718up 1% in five years
Median rent
$1,423about the Alaska median
Degree or higher
25.1%9.9 points below the US average
Homeownership
73.1%8.1 points above the US average
Time zone
Alaska UTC-09:00observes daylight saving time
Businesses
110

Where 99737 is

Delta Junction, Alaska — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population4,659
Median age36.4
Family households70.9%
Born outside the US10.2%
Speaks a language other than English at home17.2%
White (non-Hispanic)82.7%
Black (non-Hispanic)1.1%
Asian (non-Hispanic)1.6%
Hispanic or Latino7%
Veterans13.8%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$90,274
Income per person$43,775
Poverty rate9.8%
Households on SNAP or cash assistance6.7%

Household income distribution

Under $10k4.2%
$10–15k1.2%
$15–20k1.6%
$20–25k5.1%
$25–30k6.7%
$30–35k1.4%
$35–40k1.5%
$40–45k2.4%
$45–50k2.6%
$50–60k5.7%
$60–75k9.3%
$75–100k18.9%
$100–125k18.2%
$125–150k4.4%
$150–200k6.6%
$200k or more10.1%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,930
Mean adjusted gross income$79,178
Returns declaring $200,000 or more4.7%
Returns, under $25k22.8%
Returns, $25k–$50k19.2%
Returns, $50k–$75k15.5%
Returns, $75k–$100k13.5%
Returns, $100k–$200k24.4%
Returns, $200k or more4.7%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$286,000
Median gross rent$1,423
Rent as a share of household income24.5%
Owner-occupied73.1%
Vacant homes40.3%
Median year built1987

What the homes are

Detached house83.6%
Attached house2.9%
2 to 4 units3.8%
5 to 19 units4.6%
Mobile home5%
Boat, RV or van0.1%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$318,718as of 2026-07
Typical home value, 1 yeardown 7.5%
Typical home value, 5 yearsup 1%
Typical home value, 10 yearsup 39.6%
Typical home value since 2000
201620212026$363,790$218,704

$228,368 in 2016 to $318,718 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5%
Bachelor's degree or higher25.1%
High school diploma or higher94.4%
Works from home8.5%
Drives to work alone63.6%
Takes public transport0.7%
Commutes 45 minutes or more6.7%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity34.1% 0.7 pts above the national average of 33.4%
Diagnosed diabetes8.9% 3.1 pts below the national average of 12%
Currently smokes16.2% 3 pts above the national average of 13.2%
High blood pressure33.4% 0.7 pts below the national average of 34.1%
Fair or poor general health18.5% 1.8 pts below the national average of 20.3%
No health insurance (18–64)10.4% 0.9 pts below the national average of 11.3%
Depression19.4% 2.5 pts below the national average of 21.9%
No leisure-time physical activity23.2% 2.2 pts below the national average of 25.4%
Arthritis24.3% 0.8 pts below the national average of 25.1%
Binge drinking18.8% 2.8 pts above the national average of 16%
Taking blood pressure medication68.3% 6.4 pts below the national average of 74.7%
Cancer (non-skin)7.8% same as the national average of 7.7%
Current asthma9.9% 0.5 pts below the national average of 10.4%
Coronary heart disease6.2% same as the national average of 6.2%
Routine check-up in past year65.8% 10.9 pts below the national average of 76.7%
Cholesterol screening79.3% 6.6 pts below the national average of 85.9%
Cognitive disability13.8% 1 pts below the national average of 14.8%
Colorectal screening58.8% 5.5 pts below the national average of 64.3%
COPD6.7% same as the national average of 6.6%
Visited a dentist58.3% 3 pts below the national average of 61.3%
Any disability29.4% 1.3 pts below the national average of 30.7%
Lacks emotional support24.6% same as the national average of 24.8%
Food insecurity12.3% 4.8 pts below the national average of 17.1%
Received food stamps8.9% 5.4 pts below the national average of 14.3%
Hearing disability7.9% 1.2 pts above the national average of 6.7%
High cholesterol32.8% 3.4 pts below the national average of 36.2%
Housing insecurity10.5% 3.3 pts below the national average of 13.8%
Independent living disability7.5% 0.9 pts below the national average of 8.4%
Lacks transport7.9% 1.3 pts below the national average of 9.2%
Loneliness33.6% 0.8 pts below the national average of 34.4%
Mammography use62.7% 13.2 pts below the national average of 75.9%
Poor mental health (14+ days)15.4% 1.4 pts below the national average of 16.8%
Mobility disability11.9% 2.1 pts below the national average of 14%
Poor physical health (14+ days)13.5% same as the national average of 13.5%
Self-care disability3.5% 0.5 pts below the national average of 4%
Utility shut-off threat7.3% 1.5 pts below the national average of 8.8%
Sleeps under 7 hours34.4% 2 pts below the national average of 36.4%
Stroke3.2% same as the national average of 3.4%
All natural teeth lost11.4% 1.6 pts below the national average of 13%
Vision disability4.5% 1.1 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments110
People employed1,297
Annual payroll$128,149,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 99.4% of US census tracts
FEMA ratingVery High
Expected annual loss98.4 out of 100
Community resilience9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Wildfire99.5Very High at its worst in this ZIP code
Landslide98.8Relatively High at its worst in this ZIP code
Winter weather98Very High at its worst in this ZIP code
Cold wave97.9Very High at its worst in this ZIP code
Earthquake94.1Very High at its worst in this ZIP code
Avalanche92.9Very High at its worst in this ZIP code
Volcanic activity81.1Relatively Low at its worst in this ZIP code
Lightning65Relatively Moderate at its worst in this ZIP code
River flooding52.1Relatively Moderate at its worst in this ZIP code
Ice storm33.2Relatively Low at its worst in this ZIP code
Hail7.9Very Low at its worst in this ZIP code
Strong wind1.6Very Low at its worst in this ZIP code
Tornado0.2Very Low at its worst in this ZIP code
Compared with Alaska and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPAlaskaUnited States
Median household income$90,274$89,336$78,538
Income per person$43,775$44,928$43,289
Poverty rate9.8%10.2%12.4%
Median home value$286,000$333,300$303,400
Median gross rent$1,423$1,388$1,348
Homeownership73.1%66.6%65%
Bachelor's degree or higher25.1%31.2%35%
Unemployment rate5%5.8%5.2%
Works from home8.5%8.8%13.5%
Born outside the US10.2%7.8%13.9%
Median age36.435.638.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationBIG DELTA AP, AK US4.9 km away
Rain in a year10 in

Average high and low by month

January6.1°F / -8°F0.21 in rain
February15.6°F / -0.9°F0.23 in rain
March24.7°F / 3.6°F0.18 in rain
April44.2°F / 23.5°F0.2 in rain
May58.7°F / 38.2°F0.76 in rain
June68.2°F / 48.7°F2.18 in rain
July69.7°F / 51.7°F2.37 in rain
August64.5°F / 46.7°F2.02 in rain
September53.3°F / 36.4°F0.9 in rain
October33.3°F / 19.6°F0.59 in rain
November14.9°F / 1.4°F0.41 in rain
December9.4°F / -4.6°F0.23 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket16% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket39% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Delta/Greely School District49.1% of this ZIP code's land area
Alaska Gateway School District26.6% of this ZIP code's land area
Copper River School District24.3% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability68more vulnerable than 68% of US census tracts
Socioeconomic status55more vulnerable than 55% of US census tracts
Household characteristics64more vulnerable than 64% of US census tracts
Racial and ethnic minority status44more vulnerable than 44% of US census tracts
Housing type and transport82more vulnerable than 82% of US census tracts
Walkability5.8 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

99731 Fort Greely, AK36.3 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Southeast Fairbanks Census Area76.2% of this ZIP code's land area
Copper River Census Area23.8% of this ZIP code's land area
Time zoneAlaska (UTC-09:00 standard)
Daylight saving timeObserved
Land area5471.65 sq mi
Water area94.07 sq mi
Population density1 people per sq mi
Latitude, longitude64.0378, -145.7322

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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