Mason, Ohio

Mason population, 2020 to 2024

Mason added 1,160 residents from July 2020 to July 2024, a change of +3.3%. In the latest year it moved by +178. Among 254 Ohio places of 5,000 or more, that growth ranks 26th; the median place changed by -0.4%. The median place of 5,000+ in Ohio has 13,905 people, so Mason is 2.6 times that size.

Mason covers 19.48 square miles of land and 0.02 of water, for 1,850 people per square mile of land. The median Ohio place of 5,000+ has 2,000, so Mason is close to the typical town.

What county Mason is in

All of Mason's residents live in Warren County, which had 256,059 residents in 2024. Mason holds 14.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Mason

1 ZIP Code Tabulation Area (ZCTA) overlaps Mason by at least 10% of the ZCTA's or the city's land: 45040. 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 Mason is

The Census internal point of Mason is at 39.360700, -84.295900. Columbus, the capital, is 80.4 miles ENE in a straight line. The nearest larger place is Middletown, OH (52,291 people), 10.5 miles away. The nearest city of 100,000 or more is Cincinnati, OH, 19.0 miles away.

Daylight in Mason

At 39.36° N, Mason gets about 14 h 57 min of daylight around the June solstice and 9 h 24 min around the December solstice, a swing of 5 h 33 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Mason

The eight nearest incorporated places of 1,000+ in Ohio, measured between internal points. The closest is South Lebanon, 4.1 miles away, with 6,923 people.