Maine Census & Demographic Data - July 1, 2021


Maine Census Data

The tables below provide updated data and demographic estimates for Maine as of July 1, 2021. Our Maine Census Data Comparison Tool allows you to compare and rank ME cities, towns, ZIP Codes and Counties.

Maine Data & Demographics (As of July 1, 2021)


Total Population 1,377,775 (100%)
Population in Households 1,340,573 (97.3%)
Population in Families 1,008,468 (73.2%)
Population in Group Quarters1 37,202 ( 2.7%)
Population Density 45
Diversity Index2 15


Median Household Income $58,006
Average Household Income $79,241
% of Income for Mortgage4 16%
Per Capita Income $33,879
Wealth Index5 86


Total HU (Housing Units) 772,226 (100%)
Owner Occupied HU 423,236 (54.8%)
Renter Occupied HU 164,397 (21.3%)
Vacant Housing Units 184,593 (23.9%)
Median Home Value $216,158
Average Home Value $269,313
Housing Affordability Index3 137


Total Households 587,633
Average Household Size 2.28
Family Households 358,444
Average Family Size 3
  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.


2010-2021 2021-2026
Population 0.33% 0.39%
Households 0.47% 0.5%
Families 0.2% 0.33%
Median Household Income   1.9%
Per Capita Income   2.34%
Owner Occupied HU   0.76%