St Mary s city, AK Profile: Facts & Data


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St Mary s city, Alaska - Basic Facts

The City of Saint Mary's had a population of 533 as of July 1, 2020. St Mary s city ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Alaska. See peer rankings below.

The primary coordinate point for St Mary s city is located at latitude 62.0718 and longitude -163.2805 in Kusilvak (CA) Borough. The formal boundaries for the City of Saint Mary's encompass a land area of 44.29 sq. miles and a water area of 6.33 sq. miles.

The City of Saint Mary's (GNIS ID: 2419459) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Saint Mary's is located within the of Kusilvak (CA) Borough. Census subareas are statistical subdivisions of the county equivalents used in Alaska (boroughs, city and boroughs, municipalities, and census areas) and are the statistical equivalent of Micro Civil Divisions (MCDs) used in other states.


St Mary s city, AK Data & Demographics (As of July 1, 2020)


Total Population 533 (100%)
Population in Households 533 (100.0%)
Population in Families 470 (88.2%)
Population in Group Quarters1 0
Population Density 12
Diversity Index2 14


Median Household Income $34,298
Average Household Income $47,022
% of Income for Mortgage4 11%
Per Capita Income $11,488
Wealth Index5 35


Total HU (Housing Units) 220 (100%)
Owner Occupied HU 122 (55.5%)
Renter Occupied HU 38 (17.3%)
Vacant Housing Units 60 (27.3%)
Median Home Value $88,514
Average Home Value $125,203
Housing Affordability Index3 254


Total Households 160
Average Household Size 3.33
Family Households 124
Average Family Size 4
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2020 2020-2025
Population 0.49% 0.56%
Households 0.57% 0.5%
Families 1.83% 0.48%
Median Household Income   0.53%
Per Capita Income   1.66%
Owner Occupied HU   0.65%


St Mary s city, AK - Peer Comparisons by Rank and Percentile

The table below compares St Mary s city to the other 353 incorporated cities, towns and CDPs in Alaska by rank and percentile using July 1, 2020 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 112 69th
Population Density # 191 46th
Median Household Income # 275 22nd
Housing Affordability Index # 306 87th
Per Capita Income # 337 5th
Diversity Index # 304 14th

Additional comparisons and rankings can be made with a VERY EASY TO USE Alaska Census Data Comparison Tool.

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