ZIP Code Tabulation Area · Ohio

ZIP Code 45820: Cairo, OH

ZIP Code 45820 (Cairo, Allen County, Ohio) has an estimated 581 residents in 214 households. The median household income is $83,125, the median home value is $114,500 and the median gross rent is $1,023/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 2 figures for this ZIP (bachelor's or higher, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

581

Margin of error ±169

Median household income

$83,125

Margin of error ±$7,136

Median home value

$114,500

Margin of error ±$11,392

Median gross rent

$1,023/mo

Margin of error ±$149

Median age

35.9 yrs

Margin of error ±9.6 yrs

Mean travel time to work

17.9 min*

Margin of error ±9.1 min· estimate has a large margin of error

How ZIP 45820 compares with Ohio and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 4582035.9 yrsOhio39.7 yrsUnited States38.9 yrs

Median household income

ZIP 45820$83,125Ohio$71,389United States$80,734

Per capita income

ZIP 45820$33,722Ohio$40,552United States$44,673

Poverty rate

ZIP 458206.9%Ohio13.3%United States12.5%

Unemployment rate

ZIP 458202.0%Ohio4.8%United States5.2%

Bachelor's degree or higher

ZIP 4582020.4%*Ohio31.5%United States35.7%

Median home value

ZIP 45820$114,500Ohio$214,800United States$332,700

Median gross rent

ZIP 45820$1,023/moOhio$1,034/moUnited States$1,413/mo

Owner-occupied homes

ZIP 4582086.4%Ohio67.2%United States65.2%

Mean travel time to work

ZIP 4582017.9 min*Ohio23.4 minUnited States26.4 min

Worked from home

ZIP 458201.5%Ohio13.0%United States15.1%

All figures for ZIP 45820

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 45820 — ACS 2020–2024 5-year estimates
Measure	ZIP 45820	Margin of error	Ohio	United States
Total population	581	±169	11,810,293	334,922,499
Median age	35.9 yrs	±9.6 yrs	39.7 yrs	38.9 yrs
Households	214	±49	4,863,191	129,227,496
Median household income	$83,125	±$7,136	$71,389	$80,734
Per capita income	$33,722	±$4,797	$40,552	$44,673
Poverty rate	6.9%	±6.0 pts	13.3%	12.5%
Unemployment rate	2.0%	±2.2 pts	4.8%	5.2%
Bachelor's degree or higher	20.4%*	±15.2 pts	31.5%	35.7%
Median home value	$114,500	±$11,392	$214,800	$332,700
Median gross rent	$1,023/mo	±$149	$1,034/mo	$1,413/mo
Owner-occupied homes	86.4%	±7.1 pts	67.2%	65.2%
Mean travel time to work	17.9 min*	±9.1 min	23.4 min	26.4 min
Worked from home	1.5%	±1.7 pts	13.0%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 45820
Group	ZIP 45820	Ohio	United States
White alone, not Hispanic or Latino	90.5%	75.8%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	12.0%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.1%	0.5%
Asian alone, not Hispanic or Latino	3.8%	2.5%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.4%	0.6%
Two or more races, not Hispanic or Latino	0.7%	4.3%	4.3%
Hispanic or Latino (of any race)	5.0%	4.8%	19.3%

Where ZIP 45820 is

State: Ohio
Main county: Allen County
Largest overlapping place: Cairo (100% of the ZIP's land area)
Land area: 0.28 sq mi· about 2,075 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Allen County

45801 Allen County, OH 45804 Lima, OH 45805 Lima, OH 45806 Allen County, OH 45807 Allen County, OH 45808 Beaverdam, OH 45809 Gomer, OH 45817 Allen County, OH 45833 Allen County, OH 45850 Allen County, OH 45854 Lafayette, OH 45887 Allen County, OH

See every ZIP code in Ohio, or compare ZIP 45820 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.