Ayer, MA Profile: Facts, Map & Data


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Ayer, Massachusetts - Basic Facts

The Ayer Census Designated Place had a population of 2,814 as of July 1, 2015. 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 42.5622 and longitude -71.5848 in Middlesex County. The formal boundaries for the Ayer Census Designated Place (see map below) 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 elevation is 236 feet.

The Ayer Census Designated Place (GNIS ID: 2377983) 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.

Beneath the boundary map are tables with Ayer population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2015.

Alternate Unofficial Names for Ayer: Ayer Groton Junction, Ayer Junction.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


Ayer Census Designated Place, MA Boundary Map

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Boundary Maps: Town of Ayer | Middlesex County | Massachusetts Counties

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Ayer, MA Data & Demographics (As of July 1, 2015)


Total Population 2,814
Population in Households 2,658
Population in Familes 1,840
Population in Group Qrtrs 156
Population Density1 2,122
Diversity Index2 42


Total Households 1,319
Average Household Size 2.02
Family Households 659
Average Family Size 3


Total Housing Units 1,550 (100%)
Owner Occupied HU 637 (41.1%)
Renter Occupied HU 683 (44.1%)
Vacant Housing Units 231 (14.9%)
Median Home Value $276,923
Average Home Value $294,436


Median Household Income $60,255
Average Household Income $82,056
Per Capita Income $36,553
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.36% 0.21%
Households -0.27% 0.26%
Families -0.37% 0.09%
Median Household Income   4.78%
Per Capita Income   2.82%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Ayer, MA - Peer Comparisons by Rank and Percentile

The table below compares Ayer to the other 244 incorporated cities, towns and CDPs in Massachusetts by rank and percentile using July 1, 2015 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 # 159 35th
Population Density1 # 72 71st
Diversity Index2 # 46 82nd
Median Household Income # 159 35th
Per Capita Income # 104 58th

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