How old are the homes in Castle Rock Township, MN?

Name: Age of homes in Castle Rock Township, MN, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

53.3% (±10.9 points) of the homes in Castle Rock Township, MN were built before 1980 (2020–2024 American Community Survey).

13.1% were built before 1940.

3.3% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 53.3% (±10.9 points)
Built before 1940: 13.1%
Built 2010 or later: 3.3%

When the homes in Castle Rock Township were built

Housing units by year structure built, 2020–2024
Year built	Castle Rock Township	Dakota County	Minnesota	United States
2020 or later	0.8% (±1.0 points)	2.4%	1.9%	2.0%
2010 to 2019	2.5% (±2.9 points)	9.3%	8.5%	9.4%
2000 to 2009	5.6% (±3.3 points)	15.5%	13.3%	13.6%
1990 to 1999	11.2% (±3.9 points)	19.0%	12.2%	12.4%
1980 to 1989	26.6% (±12.4 points)	19.0%	12.0%	12.9%
1970 to 1979	22.4% (±6.1 points)	15.4%	14.2%	14.2%
1960 to 1969	5.4% (±3.8 points)	8.3%	9.1%	9.9%
1950 to 1959	8.9% (±5.1 points)	5.2%	9.1%	9.5%
1940 to 1949	3.5% (±2.3 points)	1.8%	4.1%	4.4%
1939 or earlier	13.1% (±5.9 points)	4.0%	15.6%	11.7%

In Castle Rock Township, the share of homes built before 1980 is higher than in Dakota County (34.7%).

It is not measurably different from Minnesota (52.1%).

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

In Dakota County, Castle Rock Township ranks 15 of 33 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 1644 of 2,629.

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 (30.9%) and the share built before 1980 (53.3%).

Homes built before 1980 in places near Castle Rock Township

Nearest places with a published estimate, compared with Castle Rock Township
Place	Distance	Homes built before 1980	Compared with this place
Castle Rock Township	—	53.3% (±10.9 points)	—
Hampton	3.9 mi	44.6% (±11.3 points)	Not measurably different
Randolph	4.9 mi	70.7% (±16.2 points)	Not measurably different
Hampton Township	5.2 mi	51.9% (±10.7 points)	Not measurably different
Waterford Township	5.6 mi	57.6% (±14.1 points)	Not measurably different
Sciota Township	5.6 mi	35.8% (±12.8 points)	Lower
Vermillion Township	5.9 mi	46.6% (±8.5 points)	Not measurably different
Randolph Township	6.3 mi	32.3% (±10.7 points)	Lower
Empire	6.6 mi	35.7% (±10.4 points)	Lower

Nearby places with a measurably lower figure: Sciota Township, MN (35.8%), Randolph Township, MN (32.3%), Empire, MN (35.7%).

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

Homes built before 1980 across Dakota County, place by place

Rank	Place	Homes built before 1980
9	West St. Paul	64.4% (±6.2 points)
10	Marshan Township	59.8% (±11.6 points)
11	Nininger Township	57.8% (±18.3 points)
12	Waterford Township	57.6% (±14.1 points)
13	Ravenna Township	57.4% (±13.3 points)
14	Douglas Township	56.9% (±11.0 points)
15	Castle Rock Township	53.3% (±10.9 points)
16	Hampton Township	51.9% (±10.7 points)
17	Vermillion Township	46.6% (±8.5 points)
18	Burnsville	45.0% (±3.0 points)
19	Hampton	44.6% (±11.3 points)
20	Hastings	44.2% (±4.0 points)
21	Mendota Heights	44.1% (±5.1 points)

Showing 13 of 33 places in Dakota 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 Castle Rock Township

How old are most homes in Castle Rock Township?

53.3% of homes in Castle Rock Township, MN were built before 1980 (2020–2024 American Community Survey).

Do homes in Castle Rock Township 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 30.9% and 53.3% of homes in Castle Rock Township were built before then.

Does a contractor need lead certification to work on older homes in Castle Rock Township?

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 — Castle Rock township, Dakota County, Minnesota

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 Castle Rock township, Dakota County, Minnesota (county subdivision:10306, in state:27 county:037).

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.