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ZIP Code 45820 - Cairo Ohio

Overview

ZIP Code 45820 is located in Cairo Ohio. Portions of 45820 are also in Monroe Township (Allen County). 45820 is entirely within Allen County. Regionally, 45820 is located in the Dayton Area.

ZIP Code 45820 Quick Stats

ZIP Code NameCairo
Primary CountyAllen County
ZIP Code TypePO Box
Population (2022)645
Area Code(s)419 / 567
Current Time
EDT

ZIP Code 45820 Map

Map of ZIP Code 45820 in Cairo, OH — click to open interactive map

45820 Demographics

45820 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Ohio. The majority race/ethnicity residing in 45820 is White. The current unemployment level in 45820 is 4%.

Population645
Population Growth Rate36.42%
Population Density2,963 People per Square Mile
Total Households177
Median Household Income (2021)$61,625
Current Unemployment Rate (May 2026)4%
Sales Tax Rate (2025)6.8%
Majority Race/EthnicityWhite - 88.61%

45820 Race/Ethnicity Breakdown

Race/EthnicityTotalPercentage
White71688.61%
Black00%
Hispanic9011.14%
Asian20.25%
Native American00%
Hawaiian/Pac. Islander00%

45820 Educational Attainment Levels

Highest Education LevelTotalPercentage
Less Than 1 Year of College155.62%
Bachelor Degree2910.86%
High School Diploma11643.45%
No High School Diploma41.5%
GED or Alternate83%
1 or More Years of College5520.6%
Associates Degree2710.11%
Masters Degree134.87%
Professional Degree00%
Doctorate Degree00%

45820 Geography

Coordinates40.83010483, -84.08437347
Adjacent ZIP Codes
Cities/Towns in 45820
RegionDayton Area
Metropolitan/Micropolitan Stat AreaLima, OH
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area0.21771229 Square Miles

45820 Schools

School Districts in 45820
Elementary Schools in 45820
Middle Schools in 45820
High Schools in 45820

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