US ZIP Code
45820

Cairo, OH

Allen County  ·  Ohio

● Active
👥 600 Population ↑ 18% since 2019
💰 $79,643 Median HH Income
≈ Avg ↑ 55% since 2019
🎂 34.9 Median Age ↓ 7% since 2019
🏠 $107,900 Median Home Value
▼ 61% below avg ↑ 13% since 2019
🎓 32.5% College Grads
▼ 16% below avg
📊 1.6% Unemployment
▼ 68% below avg ↓ 81% since 2019
ZIP Code Details
ZIP Code45820
CityCairo
StateOhio (OH)
CountyAllen County
Area Code419/567
Elevation812 ft
Latitude40.830753
Longitude-84.084489
TimezoneNew York (DST)
FIPS39003
ZIP TypePO Box
StatusActive
People & Population (ACS 2023)
♂ Male 53.3% (320) Female 46.7% (280) ♀

Race & Ethnicity

White: 92.8%Hispanic: 5.5%Asian: 0.8%Other: 0.3%Race
White92.8%
Hispanic5.5%
Asian0.8%
Other0.3%

Age Breakdown

Under 5
5%
5–17
11%
18–24
13%
25–44
29%
45–64
26%
65+
9%

Key Indicators

Median Age34.9 yrs ↓ 7% since 2019
Avg Household Size2.54
Below Poverty5.8% ▼ 42% below avg
College Grads32.5% ▼ 16% below avg
Unemployment1.6% ▼ 68% below avg
No HS Diploma2 (0.5%)
HS Graduate144 (34.4%)
Some College86 (20.6%)
Associates50 (12%)
Bachelors63 (15.1%)
Graduate Degree73 (17.5%)

Education

No HS: 0.5%HS Grad: 34.4%Some College: 20.6%Associates: 12%Bachelors: 15.1%Graduate: 17.5%Edu
No HS0.5%
HS Grad34.4%
Some College20.6%
Associates12.0%
Bachelors15.1%
Graduate17.5%
Housing & Income

Housing Tenure

Owner: 83.5%Renter: 16.5%Tenure
Owner83.5%
Renter16.5%

Home Value Distribution

Under $50k
13%
$50k–100k
26%
$100k–150k
43%
$150k–200k
8%
$200k–300k
11%

Financials

Median HH Income$79,643 ≈ Avg ↑ 55% since 2019
Median Home Value$107,900 ▼ 61% below avg ↑ 13% since 2019
Home/Income Ratio1.4x (nat avg ~3.5x)
Median Rent$850/mo ↑ 27% since 2019
Total Units263
Vacant Units27
Avg HH Size2.54

Income Distribution

Under $25k
4%
$25k–50k
18%
$50k–75k
23%
$75k–100k
30%
$100k–150k
11%
$150k–200k
14%
Employment & Commute

How People Get to Work

Drove Alone
99%
Work From Home
1%

Commute Time

Under 15 min
36%
15–30 min
53%
30–45 min
6%
Over 45 min
5%
Housing Stock

Year Built

Before 1940
1%
1940s–1950s
9%
1960s–1970s
17%
1980s–1990s
7%
2000+
66%

Summary

Total Units263
Vacant27
Owner Occupied83.5%
Renter Occupied16.5%
Avg HH Size2.54
Frequently Asked Questions
ZIP code 45820 is in Cairo, OH, in Allen County.
ZIP code 45820 is located in Ohio (OH).
ZIP code 45820 is in Allen County, OH.
ZIP 45820 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 45820 is 600 people (ACS 2023).
The median household income in ZIP code 45820 is $79,643 (ACS 2023).
The median home value in ZIP 45820 is $107,900 (ACS 2023).
About ZIP Code 45820

ZIP code 45820 is located in Cairo, Ohio, within Allen County. With a population of 600, this is a sparsely populated ZIP code with a relatively young community — the median age is 34.9 years. Economically, 45820 is a middle-income ZIP code: the median household income of $79,643 is near the national average.

Real estate in ZIP code 45820 represents one of the more affordable housing markets in the country. The median home value of $107,900 is well below the national average. Renters can expect to pay around $850 per month in median rent. Homeownership is strong here — 83.5% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 13% since 2019.

The population of 45820 is primarily White (92.83%). Residents are moderately educated — 32.5% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 5.8%. Household income has grown by 55% since 2019.

The unemployment rate in 45820 stands at 1.6%, which is well below the national average. As in most parts of the country, driving alone is the dominant commute mode at 92%.

Overall, ZIP code 45820 in Cairo, OH is characterized as middle-income, moderately educated, a relatively young community, and predominantly owner-occupied. With 600 residents, a median household income of $79,643, and a median home value of $107,900, it offers a clear picture of life in this part of Ohio.