🇺🇸 United States ZIP Code

STANDARD

45231

Cincinnati

ZIP Code 45231 is a standard zip code serving Cincinnati, Cincinnati, Ohio (OH), in Hamilton County, United States. It has an estimated population of 40,893 with a median household income of $44,057. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Ohio (OH)
County: Hamilton
City: Cincinnati
Timezone: America/New_York

Coordinates

Latitude: 39.241800
Longitude: -84.543700

Geographic Details

Land Area: 14.35 mi²
Water Area: 0.21 mi²
Population Density: 2850.0 people per mi² (85th percentile)
Bounding Box: 39.308090°N, 39.208998°S, -84.487156°E, -84.576783°W

With 40,893 residents spread across 14.35 square miles, this area has a population density of 2850.0 people per square mile.

Demographics

40,893

Population

95th percentile

$44,057

Median Income

40th percentile

$108,700

Median Home Value

40th percentile

14.35 mi²

Land Area

The median household income in 45231 is $44,057, and the median home value is $108,700.

Housing

17,435

Total Units

16,121

Occupied Units

92.5%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Cincinnati, OH.

45201

Cincinnati

45202

Cincinnati

45203

Cincinnati

45204

Cincinnati

45205

Cincinnati

45206

Cincinnati

45207

Cincinnati

45208

Cincinnati

45209

Cincinnati

45211

Cincinnati

Similar ZIP Codes in Ohio

ZIP codes with similar median household income in Ohio.

44512

Youngstown

$46,577

45601

Chillicothe

$42,526

43716

Beallsville

$46,094

45836

Dunkirk

$46,313

43748

Junction City

$42,679

43113

Circleville

$47,336

43755

Lore City

$47,273

44430

Leavittsburg

$39,753

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.