How old are the homes in Keystone, IA?

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

86.9% (±14.8 points) of the homes in Keystone, IA were built before 1980 (2020–2024 American Community Survey).

49.5% were built before 1940.

2.1% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 86.9% (±14.8 points)
Built before 1940: 49.5%
Built 2010 or later: 2.1%

When the homes in Keystone were built

Housing units by year structure built, 2020–2024
Year built	Keystone	Benton County	Iowa	United States
2020 or later	0.0% (±8.5 points)	0.4%	1.7%	2.0%
2010 to 2019	2.1% (±2.1 points)	3.7%	9.2%	9.4%
2000 to 2009	4.6% (±6.0 points)	11.5%	10.8%	13.6%
1990 to 1999	3.6% (±2.8 points)	13.7%	9.6%	12.4%
1980 to 1989	2.8% (±2.4 points)	6.4%	7.1%	12.9%
1970 to 1979	15.7% (±7.0 points)	9.7%	14.0%	14.2%
1960 to 1969	7.5% (±4.6 points)	8.3%	9.7%	9.9%
1950 to 1959	6.0% (±5.0 points)	7.9%	9.7%	9.5%
1940 to 1949	8.2% (±5.2 points)	4.8%	4.6%	4.4%
1939 or earlier	49.5% (±9.9 points)	33.6%	23.5%	11.7%

In Keystone, the share of homes built before 1980 is higher than in Benton County (64.3%).

It is also higher than in Iowa (61.5%).

It is higher than the national figure (49.7%).

In Benton County, Keystone ranks 4 of 14 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 239 of 943.

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 (71.2%) and the share built before 1980 (86.9%).

Homes built before 1980 in places near Keystone

Nearest places with a published estimate, compared with Keystone
Place	Distance	Homes built before 1980	Compared with this place
Keystone	—	86.9% (±14.8 points)	—
Van Horne	5.6 mi	72.2% (±14.4 points)	Not measurably different
Elberon	6.1 mi	81.8% (±18.4 points)	Not measurably different
Luzerne	6.6 mi	87.2% (±48.3 points)	Not measurably different
Belle Plaine	8.2 mi	85.8% (±12.1 points)	Not measurably different
Blairstown	8.8 mi	75.4% (±14.9 points)	Not measurably different
Vining	9.7 mi	87.8% (±80.2 points)	Not measurably different
Garrison	10 mi	92.8% (±16.7 points)	Not measurably different
Chelsea	11 mi	84.1% (±23.2 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

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

Homes built before 1980 across Benton County, place by place

Rank	Place	Homes built before 1980
1	Mount Auburn	97.0% (±23.7 points)
2	Garrison	92.8% (±16.7 points)
3	Luzerne	87.2% (±48.3 points)
4	Keystone	86.9% (±14.8 points)
5	Belle Plaine	85.8% (±12.1 points)
6	Newhall	81.7% (±13.8 points)
7	Vinton	77.5% (±11.7 points)
8	Norway	76.3% (±16.8 points)
9	Blairstown	75.4% (±14.9 points)
10	Van Horne	72.2% (±14.4 points)

Showing 10 of 14 places in Benton 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.

What you can do on Seayora in Keystone

One account for renting, owning, managing and fixing homes, with these figures beside you.

Do repairs, renovations or maintenance?

Get found by owners and renters near Keystone, and send estimates and invoices from your phone.

Join as a pro · Find a pro

Own or manage a rental?

List it, sign the lease and collect rent online, with the figures for Keystone beside you.

Create a landlord account · See what landlords get

Looking for a place to rent?

Browse homes for rent near Keystone, save the ones you like and apply online.

Browse rentals · Create a renter account

Questions about Keystone

How old are most homes in Keystone?

86.9% of homes in Keystone, IA were built before 1980 (2020–2024 American Community Survey).

Do homes in Keystone 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 71.2% and 86.9% of homes in Keystone were built before then.

Does a contractor need lead certification to work on older homes in Keystone?

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 — Keystone city, Iowa

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 Keystone city, Iowa (place:41115, in state:19).

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.