Town guide

Union, Connecticut

Union is a town in Tolland County, Connecticut, home to about 3,920 people across 29 square miles. It has no ZIP code of its own: it’s part of 06076 and 06242.

Homes sold for a median of $221 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.

Population3,920136 per sq mi
Price per sq ft$221Sold homes, 3 months to August 2026

ZIP codes in Union

2 ZIP codes, 2 shared with neighboring towns

Each card is that ZIP code’s whole market, including any part outside Union. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology

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  • History
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  • Getting around
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Around Union

Distances

Nearest major airportBradley International Airport (BDL)21 miles away
Nearest city of 250,000+Boston, MA70 miles away
Nearest city of 1 million+New York, NY124 miles away

Straight-line distances from the center of Union; driving is longer.

Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.

Who represents Union

Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.

Population over time

Union had 785 residents in the 2020 census, up 13% since 2000.

It’s the 142nd largest of 169 towns in Connecticut by population.

Tolland County grew from 24,523 residents in 1900 to 149,788 in 2020.

Union population by census2000: 693, 2010: 854, 2020: 785693200085420107852020

Tolland County, 1900–2020

Tolland County population, 1900 to 20201900: 24,523, 1910: 26,459, 1920: 27,216, 1930: 28,659, 1940: 31,866, 1950: 44,709, 1960: 68,737, 1970: 103,440, 1980: 114,823, 1990: 128,699, 2000: 136,364, 2010: 152,691, 2020: 149,78825K’00’1027K’20’3032K’40’5069K’60’70115K’80’90136K’00’10150K’20

Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).

Weather by month

Average highs peak around 81°F in summer, and winter lows average 14°F. About 50.4 inches of rain and melted snow fall in a typical year.

Average high and low temperature and precipitation by month near UnionJan: high 34°F, low 14°F, 3.9 in; Feb: high 36°F, low 15°F, 3.3 in; Mar: high 44°F, low 22°F, 4.3 in; Apr: high 57°F, low 33°F, 4.3 in; May: high 68°F, low 43°F, 3.8 in; Jun: high 76°F, low 53°F, 4.6 in; Jul: high 81°F, low 59°F, 4.1 in; Aug: high 79°F, low 58°F, 4.4 in; Sep: high 73°F, low 51°F, 4.3 in; Oct: high 60°F, low 39°F, 4.9 in; Nov: high 49°F, low 30°F, 4 in; Dec: high 39°F, low 21°F, 4.5 in34°14°Jan3.936°15°Feb3.344°22°Mar4.357°33°Apr4.368°43°May3.876°53°Jun4.681°59°Jul4.179°58°Aug4.473°51°Sep4.360°39°Oct4.949°30°Nov4.039°21°Dec4.5Rain and melted snow, inches

Source: NOAA 1991–2020 climate normals, Staffordville, CT weather station (3 miles away).

Health care

64 doctors and other health care providers list an office in Union’s ZIP codes.

Nearest hospitals

  • Johnson Memorial HospitalGeneral hospital · emergency room · CMS rating 3 of 5 · Stafford Springs5.5 miles
  • Umass Memorial Health - Harrington HospitalGeneral hospital · emergency room · CMS rating 3 of 5 · Southbridge14.7 miles
  • Manchester Memorial HospitalGeneral hospital · emergency room · CMS rating 4 of 5 · Manchester17.6 miles

Providers with an office here

Primary care doctors3
Specialist doctors13
Nurse practitioners and physician assistants13
Mental health providers27
Physical and occupational therapists6
Optometrists1
Chiropractors1
Pharmacies4

Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.

Places in and around Union

Parks (9 nearby)

  • Olympic Park · 6 acres1.4 mi
  • Staffordville Recreation Area · 5 acres2.6 mi
  • Heritage Park · 3 acres0.4 mi
  • Furnace Hollow Square Park · 3 acres1.4 mi

Grocery stores (1 nearby)

  • Big Y2.2 mi

Pharmacies (1 nearby)

  • Walgreens2.4 mi

Libraries (1 nearby)

  • Stafford Public Library1.1 mi

Museums (2 nearby)

  • Patten District One Room Schoolhouse0.4 mi
  • Stafford Historical Society1.3 mi

Theaters and performance venues (1 nearby)

  • Palace Theater1.3 mi

Counts are within about 3.5 miles of the center of town.

Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.

Schools in Union

Public schools here are run by Eastford School District, Union School District, Stafford School District. Check each district’s attendance zones for a specific address.

Public schools (6)
SchoolGradesStudentsTypeDistance
Eastford Elementary SchoolEastfordPre-K–8173Public11.2 mi
Union SchoolUnionPre-K–849Public6.5 mi
West Stafford SchoolStafford SpringsPre-K–K176Public3.2 mi
Stafford Elementary SchoolStafford Springs1–5438Public1.0 mi
Stafford Middle SchoolStafford Springs6–8285Public1.1 mi
Stafford High SchoolStafford Springs9–12357Public1.3 mi

Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.

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Where Union is

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Shares ZIP codes with Stafford, Eastford and Ellington.

Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.