🇺🇸 United States ZIP Code

STANDARD

45405

Dayton

ZIP Code 45405 is a standard zip code serving Dayton, Dayton, Ohio (OH), in Montgomery County, United States. It has an estimated population of 18,948 with a median household income of $27,521. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 39.789900
Longitude: -84.213500

Geographic Details

Land Area: 3.92 mi²
Water Area: 0.09 mi²
Population Density: 4839.0 people per mi² (90th percentile)
Bounding Box: 39.813985°N, 39.764739°S, -84.187538°E, -84.244788°W

With 18,948 residents spread across 3.92 square miles, this area has a population density of 4839.0 people per square mile.

Demographics

18,948

Population

80th percentile

$27,521

Median Income

5th percentile

$66,600

Median Home Value

10th percentile

3.92 mi²

Land Area

The median household income in 45405 is $27,521, and the median home value is $66,600. This is below the national average for household income.

Housing

11,797

Total Units

8,316

Occupied Units

70.5%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Dayton, OH.

45401

Dayton

45402

Dayton

45403

Dayton

45404

Dayton

45406

Dayton

45409

Dayton

45410

Dayton

45412

Dayton

45413

Dayton

45414

Dayton

Similar ZIP Codes in Ohio

ZIP codes with similar median household income in Ohio.

45219

Cincinnati

$22,599

45662

Portsmouth

$30,483

44109

Cleveland

$30,139

43008

Buckeye Lake

$27,663

44093

Williamsfield

$32,344

44055

Lorain

$30,792

43609

Toledo

$25,139

45766

New Marshfield

$30,161

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.