Postal Codes

99623 ZIP Code

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ZIP code 99623 covers Wasilla, Alaska, with a population of about 22,786 and a median household income of $87,606.

Population
22,78688 per square mile
Median age
35.43.3 points below the US average
Median household income
$87,606about the Alaska median
Poverty rate
11.9%0.5 points below the US average
Typical home value
$381,575up 24.1% in five years
Median rent
$1,5581.1× the Alaska median
Degree or higher
17.3%17.7 points below the US average
Homeownership
80.8%15.8 points above the US average
Time zone
Alaska UTC-09:00observes daylight saving time
Businesses
253

Where 99623 is

Wasilla, 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

Population22,786
Median age35.4
Family households71.5%
Born outside the US2.6%
Speaks a language other than English at home5.6%
White (non-Hispanic)74.6%
Black (non-Hispanic)1.5%
Asian (non-Hispanic)3%
Hispanic or Latino4.4%
Veterans15.1%
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$87,606
Income per person$37,283
Poverty rate11.9%
Households on SNAP or cash assistance11.2%

Household income distribution

Under $10k2.9%
$10–15k2.4%
$15–20k2.8%
$20–25k3.8%
$25–30k3.1%
$30–35k2.4%
$35–40k3.0%
$40–45k3.6%
$45–50k1.3%
$50–60k6.4%
$60–75k9.0%
$75–100k16.8%
$100–125k10.8%
$125–150k8.4%
$150–200k12.5%
$200k or more10.7%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$294,800
Median gross rent$1,558
Rent as a share of household income32.6%
Owner-occupied80.8%
Vacant homes15.1%
Median year built2002

What the homes are

Detached house85.8%
Attached house1.4%
2 to 4 units8%
5 to 19 units0.8%
20 or more units0.2%
Mobile home3.7%
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$381,575as of 2026-07
Typical home value, 1 yearup 7.9%
Typical home value, 5 yearsup 24.1%
Typical home value, 10 yearsup 59.6%
Typical asking rent$2,302as of 2026-07
Typical asking rent, 1 yearup 4.8%
Typical home value since 2000
200520152026$381,575$181,467

$181,467 in 2005 to $381,575 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate5%
Bachelor's degree or higher17.3%
High school diploma or higher92.2%
Works from home8.4%
Drives to work alone72.7%
Takes public transport0.7%
Commutes 45 minutes or more37.3%
Health

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

Obesity39% 5.6 pts above the national average of 33.4%
Diagnosed diabetes9.2% 2.8 pts below the national average of 12%
Currently smokes19.8% 6.6 pts above the national average of 13.2%
High blood pressure31.7% 2.4 pts below the national average of 34.1%
Fair or poor general health20.2% same as the national average of 20.3%
No health insurance (18–64)10.9% same as the national average of 11.3%
Depression22.5% 0.6 pts above the national average of 21.9%
No leisure-time physical activity24.1% 1.3 pts below the national average of 25.4%
Arthritis25% same as the national average of 25.1%
Binge drinking16.8% 0.8 pts above the national average of 16%
Taking blood pressure medication64.7% 10 pts below the national average of 74.7%
Cancer (non-skin)6.6% 1.1 pts below the national average of 7.7%
Current asthma11% 0.6 pts above the national average of 10.4%
Coronary heart disease5.9% same as the national average of 6.2%
Routine check-up in past year69.1% 7.6 pts below the national average of 76.7%
Cholesterol screening77.5% 8.4 pts below the national average of 85.9%
Cognitive disability16.3% 1.5 pts above the national average of 14.8%
Colorectal screening54.6% 9.7 pts below the national average of 64.3%
COPD7% same as the national average of 6.6%
Visited a dentist54.3% 7 pts below the national average of 61.3%
Any disability33.5% 2.8 pts above the national average of 30.7%
Lacks emotional support26.2% 1.4 pts above the national average of 24.8%
Food insecurity15.7% 1.4 pts below the national average of 17.1%
Received food stamps11.8% 2.5 pts below the national average of 14.3%
Hearing disability8% 1.3 pts above the national average of 6.7%
High cholesterol34.6% 1.6 pts below the national average of 36.2%
Housing insecurity13.7% same as the national average of 13.8%
Independent living disability8.5% same as the national average of 8.4%
Lacks transport9.9% 0.7 pts above the national average of 9.2%
Loneliness33.3% 1.1 pts below the national average of 34.4%
Mammography use65.1% 10.8 pts below the national average of 75.9%
Poor mental health (14+ days)17.5% 0.7 pts above the national average of 16.8%
Mobility disability12.4% 1.6 pts below the national average of 14%
Poor physical health (14+ days)14.3% 0.8 pts above the national average of 13.5%
Self-care disability3.7% same as the national average of 4%
Utility shut-off threat9.2% same as the national average of 8.8%
Sleeps under 7 hours35.5% 0.9 pts below the national average of 36.4%
Stroke3.1% same as the national average of 3.4%
All natural teeth lost16.1% 3.1 pts above the national average of 13%
Vision disability4.9% 0.7 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments253
People employed1,170
Annual payroll$54,689,000
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 97.7% of US census tracts
FEMA ratingRelatively High to Very High across the 10 census tracts this ZIP code covers
Expected annual loss97.8 out of 100
Community resilience1.1 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.

Avalanche99.5Very High at its worst in this ZIP code
Earthquake99.4Very High at its worst in this ZIP code
Wildfire96.3Relatively High at its worst in this ZIP code
Winter weather95.7Very High at its worst in this ZIP code
Volcanic activity93.9Relatively Low at its worst in this ZIP code
Landslide82Relatively Low at its worst in this ZIP code
Lightning49.5Relatively Moderate at its worst in this ZIP code
Cold wave48Relatively Moderate at its worst in this ZIP code
Tsunami47.6Very Low at its worst in this ZIP code
River flooding25.7Relatively Low at its worst in this ZIP code
Ice storm11Very Low at its worst in this ZIP code
Hail9.7Very Low at its worst in this ZIP code
Tornado0.1Very 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$87,606$89,336$78,538
Income per person$37,283$44,928$43,289
Poverty rate11.9%10.2%12.4%
Median home value$294,800$333,300$303,400
Median gross rent$1,558$1,388$1,348
Homeownership80.8%66.6%65%
Bachelor's degree or higher17.3%31.2%35%
Unemployment rate5%5.8%5.2%
Works from home8.4%8.8%13.5%
Born outside the US2.6%7.8%13.9%
Median age35.435.638.7
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 stationANDERSON LAKE, AK US15.8 km away
Rain in a year19 in
Snow in a year62 in

Average high and low by month

January23.7°F / 10.9°F0.73 in rain, 10.9 in snow
February28.8°F / 14.3°F0.87 in rain, 9 in snow
March33.8°F / 18.5°F0.64 in rain, 8.7 in snow
April46.5°F / 28.9°F0.38 in rain, 2.3 in snow
May58.3°F / 37.3°F1.12 in rain, 0.3 in snow
June64°F / 44.8°F1.75 in rain
July66.8°F / 49.7°F2.59 in rain
August63.6°F / 47°F3.44 in rain
September54.6°F / 39.5°F2.86 in rain, 0.1 in snow
October42.4°F / 29°F1.84 in rain, 4.4 in snow
November29.7°F / 16.7°F1.15 in rain, 11.3 in snow
December25.3°F / 13.6°F1.46 in rain, 15 in snow
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 supermarketNone of this ZIP code
Far from a supermarket6% of this ZIP code's area
No vehicle and far from a supermarketNone of this ZIP code
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%.

Matanuska-Susitna Borough School District100% 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 vulnerability62more vulnerable than 62% of US census tracts
Socioeconomic status65more vulnerable than 65% of US census tracts
Household characteristics46more vulnerable than 46% of US census tracts
Racial and ethnic minority status42more vulnerable than 42% of US census tracts
Housing type and transport65more vulnerable than 65% of US census tracts
Walkability4 out of 20Least walkable
Nearby ZIP codes

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

99687 Wasilla, AK6.1 km away
99629 Wasilla, AK8.8 km away
99654 Wasilla, AK11.5 km away
99694 Houston, AK15.3 km away
99567 Chugiak, AK16.8 km away
99652 Big Lake, AK19.5 km away
99577 Eagle River, AK26.5 km away
99504 Anchorage, AK39 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.

Matanuska-Susitna Borough100% of this ZIP code's land area
Time zoneAlaska (UTC-09:00 standard)
Daylight saving timeObserved
Land area258.47 sq mi
Water area8.54 sq mi
Population density88 people per sq mi
Latitude, longitude61.5463, -149.5901

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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