Zip Code 45231
Cincinnati, Ohio — Hamilton County
📍 ZIP code 45231 is in Cincinnati, Hamilton County, Ohio.
ZIP code 45231 is located in Cincinnati, Hamilton County, Ohio. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 40,852. The area code for ZIP code 45231 is 513.
Quick Answer
Zip code 45231 is in Cincinnati, Ohio (Hamilton County). It has a population of 40,852, median household income of $69,140, and median home value of $164,900.
Population
40,852
Income
$69,140
Home Value
$164,900
Climate
87°F / 21°F
About Zip Code 45231
Zip code 45231 is located in Cincinnati, Ohio, within Hamilton County. Home to approximately 40,852 residents, this area sits at an elevation of 783 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 513.
The median household income is $69,140 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $164,900, and the cost of living index is 67 (33% below the national average of 100).
Summers average a high of 87°F while winters drop to 21°F. The area receives about 45 in of rain and 9 in of snow annually. The zip code covers 14.3 square miles of land area and 0.2 square miles of water.
Key Statistics
40,852
$69,140
$164,900
Eastern (EST/EDT)
513
783 ft
14.3 sq mi
40.8
17,845
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Compare With Nearby Zip Codes
| Metric | 45231 | 45218 | 45240 | 45224 | 45251 | 45239 |
|---|---|---|---|---|---|---|
| City | Cincinnati, OH | Cincinnati, OH | Cincinnati, OH | Cincinnati, OH | Cincinnati, OH | Cincinnati, OH |
| Population | 40,852 | 3,815 | 29,453 | 22,186 | 20,561 | 29,035 |
| Median Income | $69,140 | $74,617 | $66,918 | $57,754 | $75,620 | $58,276 |
| Home Value | $164,900 | $169,600 | $176,600 | $174,400 | $175,900 | $155,500 |
| Cost of Living | 67 | 72 | 71 | 61 | 71 | 60 |
| Median Age | 40.8 | 39.8 | 36.6 | 42 | 39 | 33.5 |
Cost of Living
100 = National Average. Cincinnati's cost of living is 33% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.4x
Demographics
Zip code 45231 has a population of 40,852 people with a median age of 40.8. There are 17,845 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Cincinnati (45231) population trend from 2010 to 2024
↑ 24.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
21°F
45 in
9 in
Cincinnati experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 21°F. The area receives about 9 in of snow per year.
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Housing & Economy
Median Home Value
$164,900
Median Household Income
$69,140
With 17,845 housing units across 14.3 square miles, 45231 has a housing density of 1,248 units per square mile. The home price-to-income ratio is 2.4x.
Location & Geography
Latitude
39.2475°
Longitude
-84.5348°
Land Area
14.3 sq mi
Water Area
0.2 sq mi
Nearby Zip Codes
Zip codes closest to 45231 (Cincinnati, OH) with distances:
All Zip Codes in Cincinnati, OH
Other zip codes serving Cincinnati:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 45231's $69,140. A way to compare Cincinnati to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 45231 (Cincinnati, OH). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Cincinnati, Ohio?
Cincinnati, Ohio uses zip code 45231 along with 12 other zip codes.
What county is zip code 45231 in?
Zip code 45231 is located in Hamilton County, Ohio.
What is the population of zip code 45231?
The population of zip code 45231 is 40,852 with a median age of 40.8.
Is 45231 in Cincinnati, Ohio?
Yes, zip code 45231 is in Cincinnati, Hamilton County, Ohio. The area code is 513.
Frequently Asked Questions
What city is zip code 45231 in?
Zip code 45231 is in Cincinnati, Ohio. It is part of Hamilton County and uses the Eastern (EST/EDT) timezone.
What is zip code 45231?
Zip code 45231 is a U.S. postal code in Cincinnati, Ohio (Hamilton County). It has a population of 40,852 and covers 14.3 square miles.
What is the population of zip code 45231?
The population of zip code 45231 (Cincinnati, OH) is 40,852 with a median age of 40.8. There are approximately 17,845 housing units in this area.
What is the median income in zip code 45231?
The median household income in zip code 45231 (Cincinnati, OH) is $69,140 per year. The cost of living index is 67 (100 = national average).
What is the average home price in zip code 45231?
The median home value in zip code 45231 (Cincinnati, OH) is $164,900. The cost of living index is 67 compared to the national average of 100.
What county is zip code 45231 in?
Zip code 45231 is located in Hamilton County, Ohio. The primary city is Cincinnati.
What is the area code for zip code 45231?
Zip code 45231 in Cincinnati, OH uses area code 513. It is located in the Eastern (EST/EDT) timezone.
Is zip code 45231 a good place to live?
Zip code 45231 (Cincinnati, OH) has a cost of living index of 67 (100 = national average), a median household income of $69,140, and median home values of $164,900. The median age is 40.8. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 45231?
The cost of living index for zip code 45231 (Cincinnati, OH) is 67, where 100 represents the national average. This area is below the national average. Median home value: $164,900.
What schools serve zip code 45231?
Zip code 45231 in Cincinnati, Ohio is served by the local school district of Hamilton County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.