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Zip Code 45674 — Rio Grande, OH

45674 is a ZIP Code associated with Rio Grande, OH, located within Gallia. 45674 ranks #7 out of 7 ZIP codes in Gallia County by population (and #993 out of 1,232 in OH). The area supports an estimated population of 618 residents across Data Pending housing units, with a population density of 203.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (38.877980, -82.380170)

Data MetricLocal Statistic
Postal / Zip Code45674
Primary CityRio Grande
State / ProvinceOH
CountyGallia
Total Population618
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density203.9 people/sq mi
TimezoneAmerica/New_York

How 45674 Compares

MetricZIP 45674Gallia CountyOH State Average
Population61829,243 (Total)11,810,293 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density203.9 /sq mi----
County Pop Rank#7 of 7----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 45685Thurman5.5 mi1,050N/A
Zip 45614Bidwell6.5 mi5,450N/A
Zip 45631Gallipolis8.0 mi13,386N/A
Zip 45658Patriot8.1 mi2,539N/A
Zip 45686Vinton9.1 mi3,372N/A

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 →