Ayer, MA Profile: Facts & Data


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Ayer, Massachusetts - Basic Facts

The Ayer CDP(1) had a population of 3,057 as of July 1, 2023. Ayer ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Massachusetts. See peer rankings below.

The primary coordinate point for Ayer is located at latitude 42.5612 and longitude -71.5898 in Middlesex County. The formal boundaries for the Ayer Census Designated Place encompass a land area of 1.33 sq. miles and a water area of 0.06 sq. miles. Middlesex County is in the Eastern time zone (GMT -5).

The Ayer Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Ayer Census Designated Place is located within Town of Ayer, a minor civil division (MCD) of Middlesex County.

  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Ayer 2023 Demographic Data
  2. Growth Rates for Ayer (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Massachusetts Research Tools (Easy Tools & Current Data)
  3. Massachusetts Data Comparison Tool - 2023 Demographics

Ayer, MA Data & Demographics (As of July 1, 2023)


Total Population 3,057 (100%)
Population in Households 3,001 (98.2%)
Population in Families 2,077 (67.9%)
Population in Group Quarters1 56 ( 1.8%)
Population Density 2,305
Diversity Index2 51


Median Household Income $77,559
Average Household Income $99,799
% of Income for Mortgage4 32%
Per Capita Income $46,927
Wealth Index5 67
Socioeconomic Status Index6 Moderate (57.8)


Total HU (Housing Units) 1,575 (100%)
Owner Occupied HU 650 (41.3%)
Renter Occupied HU 786 (49.9%)
Vacant Housing Units 139 ( 8.8%)
Median Home Value $406,429
Average Home Value $452,115
Housing Affordability Index3 74


Total Households 1,436
Average Household Size 2.09
Family Households 697
Average Family Size 3.00
  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.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.


2020-2023 2023-2028
Population 0.73% 0.54%
Households 1.25% 0.71%
Families   0.90%
Median Household Income   2.36%
Per Capita Income   2.84%
Owner Occupied HU   1.98%

Ayer, MA - Peer Comparisons by Rank and Percentile

The table below compares Ayer to the other 248 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using July 1, 2023 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 # 155 38th
Population Density # 65 74th
Median Household Income # 164 34th
Housing Affordability Index # 141 57th
Per Capita Income # 153 39th
Diversity Index # 52 79th

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

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