What kinds of homes are in Union, ME?

Name: Types of homes in Union, ME, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Union, ME has 1,299 (±148) homes (2020–2024 American Community Survey).

That is about 40 homes per square mile of land.

84.1% are detached single-family houses.

1.4% are in buildings of two to four units.

2.9% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 1,299 (±148)
Detached houses: 84.1%
2–4 unit buildings: 1.4%
5+ unit buildings: 2.9%

Homes in Union by building size

Housing units by units in structure, 2020–2024
Building type	Union	Knox County	Maine	United States
Single-family, detached	84.1% (±5.8 points)	79.4%	70.0%	61.3%
Single-family, attached (townhouse, rowhouse)	0.0% (±2.1 points)	2.0%	2.6%	6.2%
2 units	1.4% (±1.2 points)	5.2%	4.7%	3.4%
3 or 4 units	0.0% (±2.1 points)	3.3%	5.5%	4.3%
5 to 9 units	2.9% (±3.1 points)	1.6%	3.7%	4.5%
10 to 19 units	0.0% (±2.1 points)	0.7%	1.8%	4.3%
20 or more units	0.0% (±2.1 points)	2.0%	3.6%	10.3%
Mobile home	11.6% (±5.6 points)	5.8%	8.2%	5.6%
Boat, RV, van, etc.	0.0% (±2.1 points)	0.1%	0.1%	0.1%

In Union, the share of homes in buildings of five or more units is not measurably different from Knox County (4.3%).

It is also lower than in Maine (9.1%).

It is lower than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Union

Nearest places with a published estimate, compared with Union
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Union	—	2.9% (±4.3 points)	—
Appleton	4.8 mi	0.0% (±6.2 points)	Not measurably different
Hope	4.9 mi	0.0% (±5.4 points)	Not measurably different
Washington	5.6 mi	0.0% (±6.1 points)	Not measurably different
Warren	7.3 mi	1.1% (±2.7 points)	Not measurably different
Waldoboro	8.8 mi	5.8% (±3.6 points)	Not measurably different
Liberty	9.9 mi	7.4% (±5.2 points)	Not measurably different
Thomaston	10 mi	3.9% (±3.9 points)	Not measurably different
Waldoboro (community)	10 mi	17.5% (±10.8 points)	Higher

Nearby places with a measurably higher figure: Waldoboro (community), ME (17.5%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Knox County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Rockland	14.9% (±5.5 points)
2	Camden	8.3% (±4.2 points)
3	Thomaston	3.9% (±3.9 points)
4	Union	2.9% (±4.3 points)
5	South Thomaston	1.2% (±5.1 points)
6	Warren	1.1% (±2.7 points)
7	North Haven	0.8% (±5.0 points)
8	Vinalhaven	0.6% (±3.2 points)
9	St. George	0.5% (±1.9 points)
10 (tie)	Cushing	0.3% (±4.2 points)

Showing 10 of 18 places in Knox County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Union

How many homes are in Union?

Union, ME has an estimated 1,299 (±148) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Union houses or apartments?

84.1% are detached houses and 0.0% attached houses, while 4.3% are in buildings of two or more units.

How many two-family and small multifamily homes are in Union?

1.4% of homes in Union are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Union town, Knox County, Maine

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Union town, Knox County, Maine (county subdivision:78115, in state:23 county:013).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.