Monroe, Ohio

Monroe population, 2020 to 2024

Monroe added 490 residents from July 2020 to July 2024, a change of +3.2%. In the latest year it moved by +225. Among 254 Ohio places of 5,000 or more, that growth ranks 29th; the median place changed by -0.4%. The median place of 5,000+ in Ohio has 13,905 people, so Monroe is 1.1 times that size.

Monroe covers 15.78 square miles of land and 0.03 of water, for 1,011 people per square mile of land. The median Ohio place of 5,000+ has 2,000, so Monroe is less dense than the typical town.

The 2 counties Monroe spans

Monroe crosses county lines. The Census county-part estimates split its 15,950 residents as follows; Butler County holds 99.2% of them. The shaded shapes are on the map above; dots mark the eight nearest places.

ZIP codes in Monroe

3 ZIP Code Tabulation Areas (ZCTAs) overlap Monroe by at least 10% of the ZCTA's or the city's land: 45036, 45044, 45050. 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 Monroe is

The Census internal point of Monroe is at 39.446000, -84.365800. Columbus, the capital, is 80.8 miles ENE in a straight line. The nearest larger place is Middletown, OH (52,291 people), 3.9 miles away. The nearest city of 100,000 or more is Cincinnati, OH, 22.4 miles away.

Daylight in Monroe

At 39.45° N, Monroe gets about 14 h 57 min of daylight around the June solstice and 9 h 23 min around the December solstice, a swing of 5 h 34 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Monroe

The eight nearest incorporated places of 1,000+ in Ohio, measured between internal points. The closest is Middletown, 3.9 miles away, with 52,291 people.