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Ayer

A town of 8,645 people in Middlesex County, Massachusetts
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Around town

The places and views that make it Ayer

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Outdoors in Ayer

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Map of Ayer: conserved land, trails and the top places to walk
Conserved land15%909 of 6,045 acres
Trails18 mi1.9 mi per sq mi
Parks & preserves8105 conserved acres per 1,000 residents

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

Library, Ayer, Mass (72342)c. 1930
From Ayer’s story

Library, Ayer, Mass (72342), c. 1930

Postcard · Wikimedia Commons

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The town at a glance, and the guide to how things work

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About Ayer

Town in Massachusetts, United States
1668Established
8,479Population
9.6 sq miArea
226 ftElevation

Ayer (, AIR) is a town in Middlesex County, Massachusetts, United States. Originally part of Groton, it was incorporated February 14, 1871, and became a major commercial railroad junction. The town was home to Camp Stevens, a training camp for Massachusetts volunteers during the American Civil War. Later, Fort Devens was established by the federal government to train New England soldiers for World War I. Fort Devens is a major influence on the area, although it is considerably smaller than when it was first closed in the mid-1990s. The town's population was 8,479 at the 2020 census. It contains the census-designated places of Ayer and Devens.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

Living in Ayer

Housing in Ayer

$575K▲ 2.8% in a year Typical home value · Zillow

The typical Ayer home is worth about $575,000, up 2.8% in a year, 13% below the Massachusetts typical home.

A seller's market

Buyer’sBalancedSeller’s
Days on market16
Sale-to-list100.3%
Sold in May7
Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Ayer

B+

Safety Grade B+

Ayer reports less crime per resident than 65% of the U.S. towns and cities we grade. Massachusetts has less reported crime than most states, so among its own towns Ayer sits closer to the middle.

Violent crime per 1,000
Ayer 1.8
Massachusetts 3
U.S. 3.3
Property crime per 1,000
Ayer 5.6
Massachusetts 10.4
U.S. 15.5
FBI crime data, 2025 · crimes reported to policeCrime & safety →

Schools in Ayer

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C+

School Grade C+

The public schools Ayer’s kids attend, from kindergarten through graduation, trail 65% of Massachusetts’s districts on state tests and graduation. Among towns with similar incomes, they rank near the bottom.

#113Best public schoolsof 282 in MA
DistrictAyer Shirley School DistrictSchools3

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results and graduation rates, graded within MA. Ratings are from neighbors.

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Ayer

Massachusetts · MA · Middlesex County
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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01