Zip Code 43040 — Marysville, OH

ZIP Code 43040 is associated with Marysville, OH, in Union County. The listed population estimate is 38,990; estimated density is 90.5 people per square mile. Among records with population estimates, it ranks #1 of 8 in Union County and #57 of 1,215 in OH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.261150, -83.358120)

Data MetricLocal Statistic
Postal / Zip Code43040
Primary CityMarysville
State / ProvinceOH
CountyUnion
Total Population38,990
Population Density90.5 people/sq mi
TimezoneAmerica/New_York

How 43040 Compares

MetricZIP 43040Union County recordsOH records
Population estimate38,99051,752 (sum)11,810,293 (sum)
Population Density90.5 /sq mi----
County population rank#1 of 8----
State population rank#57 of 1,215----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in OH

ZIP CodeCityDistancePopulation estimate
ZIP 43007Broadway5.5 mi63
ZIP 43045Milford Center8.0 mi1,739
ZIP 43036Magnetic Springs8.0 mi359
ZIP 43061Ostrander8.4 mi4,921
ZIP 43077Unionville Center8.6 mi269

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →