How old are the homes in the Town of Blue Mounds, WI?

Name: Age of homes in the Town of Blue Mounds, WI, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

49.1% (±10.3 points) of the homes in the Town of Blue Mounds, WI were built before 1980 (2020–2024 American Community Survey).

23.2% were built before 1940.

9.0% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 49.1% (±10.3 points)
Built before 1940: 23.2%
Built 2010 or later: 9.0%

When the homes in the Town of Blue Mounds were built

Housing units by year structure built, 2020–2024
Year built	Town of Blue Mounds	Dane County	Wisconsin	United States
2020 or later	2.5% (±2.7 points)	2.4%	1.4%	2.0%
2010 to 2019	6.5% (±3.7 points)	13.7%	7.1%	9.4%
2000 to 2009	19.1% (±8.4 points)	16.5%	12.5%	13.6%
1990 to 1999	16.1% (±6.2 points)	13.5%	12.5%	12.4%
1980 to 1989	6.8% (±4.7 points)	10.5%	9.5%	12.9%
1970 to 1979	15.0% (±5.6 points)	13.4%	14.2%	14.2%
1960 to 1969	5.2% (±4.4 points)	9.3%	9.4%	9.9%
1950 to 1959	2.7% (±2.6 points)	7.2%	10.3%	9.5%
1940 to 1949	3.0% (±2.1 points)	3.1%	5.3%	4.4%
1939 or earlier	23.2% (±6.6 points)	10.4%	17.8%	11.7%

In the Town of Blue Mounds, the share of homes built before 1980 is not measurably different from Dane County (43.4%).

It is not measurably different from Wisconsin (57.0%).

It is not measurably different from the national figure (49.7%).

In Dane County, the Town of Blue Mounds ranks 27 of 59 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1167 of 1,848.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

Why the age of a home matters: lead-based paint

Federal law treats housing built before 1978 as likely to contain lead-based paint.

Before a lease or sale of most pre-1978 housing, the landlord or seller must disclose any known lead-based paint and hazards and give the tenant or buyer the EPA pamphlet (42 U.S.C. § 4852d; 40 CFR part 745, subpart F; 24 CFR part 35, subpart A).

A contractor paid to renovate, repair or paint a pre-1978 home must be a certified firm, use a certified renovator and follow lead-safe work practices under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E) whenever the job disturbs more than 6 square feet of painted surface in a room or more than 20 square feet outside; window replacement and demolition always count (40 CFR 745.83).

Certification comes from EPA, or from the state where EPA has authorized the state to run the program.

The Census Bureau groups construction by decade, so the share built before 1978 lies between the share built before 1970 (34.1%) and the share built before 1980 (49.1%).

Homes built before 1980 in places near the Town of Blue Mounds

Nearest places with a published estimate, compared with the Town of Blue Mounds
Place	Distance	Homes built before 1980	Compared with this place
Town of Blue Mounds	—	49.1% (±10.3 points)	—
Mount Horeb	2.6 mi	31.2% (±6.9 points)	Lower
Blue Mounds	2.8 mi	30.4% (±7.9 points)	Lower
Town of Vermont	6.0 mi	53.4% (±17.8 points)	Not measurably different
Barneveld	6.1 mi	28.9% (±6.5 points)	Lower
Town of Perry	6.5 mi	60.2% (±12.3 points)	Not measurably different
Town of Springdale	6.6 mi	27.7% (±5.6 points)	Lower
Town of Brigham	6.8 mi	46.3% (±11.2 points)	Not measurably different
Town of Cross Plains	8.3 mi	41.7% (±7.8 points)	Not measurably different

Nearby places with a measurably lower figure: Mount Horeb, WI (31.2%), Blue Mounds, WI (30.4%), Barneveld, WI (28.9%).

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

Homes built before 1980 across Dane County, place by place

Rank	Place	Homes built before 1980
21	Town of York (Dane County)	52.2% (±16.0 points)
22	Town of Cottage Grove	51.6% (±13.4 points)
23	Stoughton	51.5% (±8.0 points)
24	Madison	50.6% (±1.5 points)
25	Town of Mazomanie	49.7% (±10.7 points)
26	Town of Rutland	49.2% (±13.5 points)
27 (tie)	Town of Blue Mounds	49.1% (±10.3 points)
27 (tie)	Town of Roxbury	49.1% (±9.0 points)
29	Dane	48.6% (±11.4 points)
30	Town of Primrose	47.2% (±12.3 points)
31	Deerfield	46.7% (±10.2 points)
32 (tie)	Marshall	45.7% (±14.2 points)
32 (tie)	Town of Deerfield (Dane County)	45.7% (±8.8 points)

Showing 13 of 59 places in Dane 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 Town of Blue Mounds

How old are most homes in the Town of Blue Mounds?

49.1% of homes in the Town of Blue Mounds, WI were built before 1980 (2020–2024 American Community Survey).

Do homes in the Town of Blue Mounds need a lead paint disclosure?

A home built before 1978 does, before it is rented or sold, unless an exemption applies (42 U.S.C. § 4852d); between 34.1% and 49.1% of homes in the Town of Blue Mounds were built before then.

Does a contractor need lead certification to work on older homes in the Town of Blue Mounds?

Yes, when the job disturbs more than 6 square feet of paint in a room or 20 square feet outside, or replaces a window: the firm must be certified and a certified renovator must direct the work under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E).

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Blue Mounds town, Dane County, Wisconsin

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 Blue Mounds town, Dane County, Wisconsin (county subdivision:08500, in state:55 county:025).

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_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP04_0019PE, DP04_0019PM, DP04_0020PE, DP04_0020PM, DP04_0021PE, DP04_0021PM, DP04_0022PE, DP04_0022PM, DP04_0023PE, DP04_0023PM, DP04_0024PE, DP04_0024PM, DP04_0025PE, DP04_0025PM, DP04_0026PE, DP04_0026PM

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.