Gahanna, Ohio

Gahanna population, 2020 to 2024

Gahanna lost 161 residents from July 2020 to July 2024, a change of -0.5%. In the latest year it moved by +86. Among 254 Ohio places of 5,000 or more, that growth ranks 128th; the median place changed by -0.4%. The median place of 5,000+ in Ohio has 13,905 people, so Gahanna is 2.6 times that size.

Gahanna covers 12.43 square miles of land and 0.17 of water, for 2,860 people per square mile of land. The median Ohio place of 5,000+ has 2,000, so Gahanna is denser than the typical town.

What county Gahanna is in

All of Gahanna's residents live in Franklin County, which had 1,356,303 residents in 2024. Gahanna holds 2.6% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Gahanna

1 ZIP Code Tabulation Area (ZCTA) overlaps Gahanna by at least 10% of the ZCTA's or the city's land: 43230. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Gahanna is

The Census internal point of Gahanna is at 40.036700, -82.879900. Columbus, the capital, is 8.2 miles SW in a straight line. The nearest larger place is Westerville, OH (38,612 people), 6.3 miles away. The nearest city of 100,000 or more is Columbus, OH, 6.6 miles away.

Daylight in Gahanna

At 40.04° N, Gahanna gets about 15 h 01 min of daylight around the June solstice and 9 h 19 min around the December solstice, a swing of 5 h 42 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Gahanna

The eight nearest incorporated places of 1,000+ in Ohio, measured between internal points. The closest is Minerva Park, 4.3 miles away, with 1,961 people.