ZIP Code Tabulation Area · Alaska

ZIP Code 99658: St. Mary's, AK

ZIP Code 99658 (St. Mary's, Kusilvak Census Area, Alaska) has an estimated 979 residents in 293 households. The median household income is $47,188, the median home value is $122,900 and the median gross rent is $791/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 3 figures for this ZIP (household income, home value, gross rent) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

979

Margin of error ±120

Median household income

$47,188*

Margin of error ±$25,548· estimate has a large margin of error

Median home value

$122,900*

Margin of error ±$68,372· estimate has a large margin of error

Median gross rent

$791/mo*

Margin of error ±$745· estimate has a large margin of error

Median age

26.6 yrs

Margin of error ±2.7 yrs

Mean travel time to work

4.9 min

Margin of error ±1.3 min

How ZIP 99658 compares with Alaska and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9965826.6 yrsAlaska35.8 yrsUnited States38.9 yrs

Median household income

ZIP 99658$47,188*Alaska$92,788United States$80,734

Per capita income

ZIP 99658$21,835Alaska$46,573United States$44,673

Poverty rate

ZIP 9965831.8%Alaska10.1%United States12.5%

Unemployment rate

ZIP 9965827.3%Alaska5.9%United States5.2%

Bachelor's degree or higher

ZIP 996587.7%Alaska31.7%United States35.7%

Median home value

ZIP 99658$122,900*Alaska$352,900United States$332,700

Median gross rent

ZIP 99658$791/mo*Alaska$1,419/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9965860.8%Alaska66.8%United States65.2%

Mean travel time to work

ZIP 996584.9 minAlaska19.4 minUnited States26.4 min

Worked from home

ZIP 996587.3%Alaska9.7%United States15.1%

All figures for ZIP 99658

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 99658 — ACS 2020–2024 5-year estimates
Measure	ZIP 99658	Margin of error	Alaska	United States
Total population	979	±120	735,706	334,922,499
Median age	26.6 yrs	±2.7 yrs	35.8 yrs	38.9 yrs
Households	293	±33	270,533	129,227,496
Median household income	$47,188*	±$25,548	$92,788	$80,734
Per capita income	$21,835	±$4,070	$46,573	$44,673
Poverty rate	31.8%	±6.9 pts	10.1%	12.5%
Unemployment rate	27.3%	±5.0 pts	5.9%	5.2%
Bachelor's degree or higher	7.7%	±4.3 pts	31.7%	35.7%
Median home value	$122,900*	±$68,372	$352,900	$332,700
Median gross rent	$791/mo*	±$745	$1,419/mo	$1,413/mo
Owner-occupied homes	60.8%	±6.7 pts	66.8%	65.2%
Mean travel time to work	4.9 min	±1.3 min	19.4 min	26.4 min
Worked from home	7.3%	±4.7 pts	9.7%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 99658
Group	ZIP 99658	Alaska	United States
White alone, not Hispanic or Latino	5.4%	57.7%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	2.9%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	88.6%	13.2%	0.5%
Asian alone, not Hispanic or Latino	0.0%	6.4%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	1.5%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.7%	0.6%
Two or more races, not Hispanic or Latino	5.3%	10.3%	4.3%
Hispanic or Latino (of any race)	0.7%	7.3%	19.3%

Where ZIP 99658 is

State: Alaska
Main county: Kusilvak Census Area
Largest overlapping place: St. Mary's (96% of the ZIP's land area)
Land area: 42.88 sq mi· about 23 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Kusilvak Census Area

99554 Alakanuk, AK 99563 Kusilvak Census Area, AK 99581 Kusilvak Census Area, AK 99585 Marshall, AK 99604 Hooper Bay, AK 99620 Kotlik, AK 99632 Kusilvak Census Area, AK 99650 Pilot Station, AK 99657 Kusilvak Census Area, AK 99662 Scammon Bay, AK

See every ZIP code in Alaska, or compare ZIP 99658 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.