How old are the homes in Gahanna, OH?

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

41.9% (±3.8 points) of the homes in Gahanna, OH were built before 1980 (2020–2024 American Community Survey).

1.7% were built before 1940.

5.6% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 41.9% (±3.8 points)
Built before 1940: 1.7%
Built 2010 or later: 5.6%

When the homes in Gahanna were built

Housing units by year structure built, 2020–2024
Year built	Gahanna	Franklin County	Ohio	United States
2020 or later	0.4% (±0.4 points)	1.9%	1.1%	2.0%
2010 to 2019	5.2% (±1.5 points)	9.6%	5.6%	9.4%
2000 to 2009	13.4% (±2.8 points)	11.6%	9.7%	13.6%
1990 to 1999	22.0% (±2.7 points)	12.8%	11.1%	12.4%
1980 to 1989	17.3% (±2.7 points)	12.6%	9.1%	12.9%
1970 to 1979	20.0% (±2.8 points)	14.4%	14.0%	14.2%
1960 to 1969	15.5% (±2.2 points)	11.6%	11.7%	9.9%
1950 to 1959	4.2% (±1.2 points)	10.6%	13.1%	9.5%
1940 to 1949	0.5% (±0.3 points)	3.9%	5.6%	4.4%
1939 or earlier	1.7% (±0.7 points)	10.9%	19.0%	11.7%

In Gahanna, the share of homes built before 1980 is lower than in Franklin County (51.4%).

It is also lower than in Ohio (63.4%).

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

In Franklin County, Gahanna ranks 34 of 45 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 2024 of 2,382.

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 (21.9%) and the share built before 1980 (41.9%).

Homes built before 1980 in places near Gahanna

Nearest places with a published estimate, compared with Gahanna
Place	Distance	Homes built before 1980	Compared with this place
Gahanna	—	41.9% (±3.8 points)	—
Mifflin Township (Franklin County)	0.9 mi	44.7% (±4.0 points)	Not measurably different
Jefferson Township (Franklin County)	4.2 mi	21.5% (±5.7 points)	Lower
Huber Ridge	4.3 mi	97.4% (±11.1 points)	Higher
Minerva Park	4.3 mi	66.2% (±12.1 points)	Higher
Blendon Township	4.3 mi	79.5% (±8.5 points)	Higher
Clinton Township (Franklin County)	4.4 mi	85.9% (±15.4 points)	Higher
Whitehall	4.7 mi	78.9% (±7.3 points)	Higher
Bexley	5.7 mi	90.1% (±8.1 points)	Higher

Nearby places with a measurably lower figure: Jefferson Township (Franklin County), OH (21.5%).

Nearby places with a measurably higher figure: Huber Ridge, OH (97.4%), Minerva Park, OH (66.2%), Blendon Township, OH (79.5%).

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

Homes built before 1980 across Franklin County, place by place

Rank	Place	Homes built before 1980
28	Lake Darby	48.2% (±14.5 points)
29	Groveport	47.3% (±11.3 points)
30	Obetz	47.1% (±11.3 points)
31	Westerville	46.3% (±3.7 points)
32	Mifflin Township (Franklin County)	44.7% (±4.0 points)
33	Reynoldsburg	43.0% (±3.4 points)
34	Gahanna	41.9% (±3.8 points)
35	Jackson Township (Franklin County)	37.2% (±3.6 points)
36	Grove City	32.9% (±3.4 points)
37	Norwich Township (Franklin County)	32.1% (±3.2 points)
38	Brown Township (Franklin County)	22.2% (±7.1 points)
39	Canal Winchester	21.8% (±6.0 points)
40	Jefferson Township (Franklin County)	21.5% (±5.7 points)

Showing 13 of 45 places in Franklin 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 Gahanna

How old are most homes in Gahanna?

41.9% of homes in Gahanna, OH were built before 1980 (2020–2024 American Community Survey).

Do homes in Gahanna 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 21.9% and 41.9% of homes in Gahanna were built before then.

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

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 — Gahanna city, Ohio

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 Gahanna city, Ohio (place:29106, in state:39).

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.