292 years in pictures
Census counts: 631 in 1790, a low of 196 in 1930, 785 in 2020. The archive holds 16 old photos and papers going back to 2006 and 6 maps from 1892 on.
1 place on the National Register of Historic Places.
- 1734Union is settled
Each edition grades its towns against each other only.

Union’s mean commuting time is 32 minutes, above both the Connecticut town median (27 minutes) and the median of U.S. towns (25 minutes). Among 156 Connecticut towns, just 2 have a lower typical July afternoon high than Union. 57% of the land in Union is conserved, above both the Connecticut town median (14%) and the median of U.S. towns (4.3%). Nipmuck State Forest, at 5,446 acres with 55.2 miles of trail, is the biggest park or preserve. Union has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
Where Union beats most towns.
Census counts: 631 in 1790, a low of 196 in 1930, 785 in 2020. The archive holds 16 old photos and papers going back to 2006 and 6 maps from 1892 on.
1 place on the National Register of Historic Places.
Who provides power, water and the rest in Union, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 30, 2026.
Ordered by what stands out in Union.
91 miles of trail in 7 parks and preserves. Union’s density of trails stands at 3.1 miles per square mile.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Nipmuck State Forest | 55.2 mi | 5,446 |
| 2. Yale-Myers Forest | 14.1 mi | 3,073 |
| 3. Bigelow Hollow State Park | 7.3 mi | 488 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
| School | Level | Students | Letter |
|---|---|---|---|
| Union SchoolLargest public elementary schoolGrades PK–8 | Grades PK–8 | 49 | B+ |
NCES · EDFacts
Half the trips to work are shorter than 22 miles. Nearly a tenth of Union workers do their job from home. Commuting out is the norm here: 7% of working residents work locally. Its middle household income comes in at $89,000.
| Union | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Work from home | 9% | 16% | 11% |
| Median household income | $89,000 | $109,000 | $80,000 |
| Below the poverty line | 5.7% | 5.8% | 9.6% |
| Working residents who work in town | 7.3% | 11% | 8% |
Census LEHD 2023 · ACS
In July, afternoons reach 81°; in January, nights fall to 17°, and about 64 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
FEMA puts nearly two thirds of Union’s expected hazard losses down to inland flooding, and 21% to hurricanes. Expected damage from storms and floods is lower here than in nearly two thirds of U.S. communities.
FEMA National Risk Index · OpenFEMA
The share of adults in Union who have diabetes: 9.1%. The town beats the Connecticut average on 7 of 32 CDC measures and trails it on 1. Among adults here, 12% smoke cigarettes and 32% have obesity.
| Union | Connecticut towns | U.S. towns | |
|---|---|---|---|
| Diabetes (CDC PLACES) | 9.1% | 9.4% | 12% |
| Smoke cigarettes (CDC PLACES) | 12% | 9.7% | 14% |
| Obesity (CDC PLACES) | 32% | 30% | 35% |
| Fair or poor health (CDC PLACES) | 15% | 14% | 19% |
| What stands out | Union | CT |
|---|---|---|
| Fewer uninsured adults | 6.9% | 10% |
| Fewer adults facing food insecurity | 10.4% | 14.9% |
| More adults who have had cancer | 9.6% | 8.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
93% of households own their home in Union. Home values are up 4.2% over the year to September 2026.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Museums, parks, gardens and other places to visit around Union. Close and well known come first.
Big draw17 mi LakeLake Chaubunagungamaug
23 mi National Historic SiteSpringfield Armory National Historic Site14K visitors a year
23 mi Theme parkSix Flags New England
26 mi LakeQuabbin Reservoir
31 mi Stadium & arenaPeoplesBank Arena
8 mi MuseumOld Sturbridge VillageLake Chaubunagungamaug: Bree from Worcester, MA, USA, CC BY-SA 2.0 · Springfield Armory National Historic Site: National Park Service, Public domain · Six Flags New England: Canadaolympic989, Public domain · Quabbin Reservoir: engineerchange, CC BY 2.0 · PeoplesBank Arena: PeoplesBank Arena, CC BY 2.5 · Old Sturbridge Village: Wgmleslie at en.wikipedia, CC BY-SA 2.5
2 within 15 miles of the center of Union
About 5 of every 100 Union residents are enrolled in college, against 7 across Connecticut.
In a town this size, neighbors are the best guide. Ask them anything.
Town in Connecticut, United States
Union is a town located in the northeastern part of Tolland County, Connecticut, United States and is part of the Northeastern Connecticut Planning Region and Last Green Valley National Heritage Corridor. The population was 785 at the 2020 census, making it the least populous town and municipality in Connecticut. Union includes the village of Mashapaug located in the Eastern Uplands at the Massachusetts state line. Union is located 33 miles (53 kilometers) northeast of the state capital, Hartford and 67 mi (108 km) southwest of Boston, as well as 153 mi (246 km) northeast of New York City.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
Short answers, built from the data on this page.
Union has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
2 notable people were born here, including Ebenezer Stoddard and Alonzo Horton.