Residential delivery area · Ohio
ZIP Code 45431: Dayton, OH
ZIP code 45431 uses the postal name Dayton, Ohio and lies mostly in Greene County (62% of its land) with the rest in Montgomery County (Census 2020 ZIP-county file). About 28,000 people live there (Census Bureau, ACS 2020-2024), the 5th most populous of Dayton's 30 residential ZIP codes. Median household income is $83,175 (Census Bureau, ACS 2020-2024). Most of its land (62%) lies in the city of Beavercreek.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Dayton · 30 residential ZIPs
- County
- Greene County (62%); Montgomery County (38%)
- Census places
- Beavercreek (62%); Riverside (35%)
- Neighborhood
- Beverly Gardens GeoNames
- Metro area
- Dayton-Kettering-Beavercreek, OH
- House district
- OH-10 119th Congress
- State
- Ohio
- Time zone
- Eastern
- Land area
- 11.7 sq mi · 2,382 people per sq mi
- PO Box ZIPs
- 13 more ZIP codes use the name Dayton for PO boxes or single organizations
Where is ZIP code 45431?
45431 centers on 39.764°, -84.084° and covers 11.7 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 45432, 45403, 45404, 45434, 45324.
The map draws ZIP code areas only. For the streets inside 45431, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 45431 compare with the rest of Dayton?
| Measure | 45431 | In Dayton | In Greene County | In OH |
|---|---|---|---|---|
| People (ACS 2020-2024) | 27,951 | 5th of 30 | 6th of 25 | 124th of 1,233 |
| Median household income | $83k | 7th of 25 | 9th of 17 | 218th of 755 |
| Median home value | $210k | 9th of 25 | 11th of 18 | 349th of 810 |
Its median household income is higher than in 66% of U.S. residential ZIP codes, and it is denser than 86% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 45431?
The 2020 Census counted 26,660 people in 45431; the ACS, which samples households over 2020-2024, estimates 27,951. Between the 2010 and 2020 censuses its population grew 1.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 27,951
- 2020 Census count
- 26,660+1.3% since 2010 (26,315)
- Households
- 12,529
- Median age
- 35.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 45431?
Of the 27,951 people the ACS estimates in 45431, 20.8% are under 18 and 16.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (79.7%).
- Under 1820.8%
- 18 to 6462.8%
- 65 and older16.4%
- White, not Hispanic79.7%
- Other or two or more5.8%
- Asian, not Hispanic5.2%
- Hispanic or Latino5.1%
- Black, not Hispanic4.1%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 45431 earn?
Median household income is $83,175 (ACS 2020-2024), the 9th highest of the 17 ranked ZIP codes in Greene County. It is not measurably different from 2015-2019 ($77,254 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $83,175
- Income per person
- $43,597
- Below the poverty line
- 9.0%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 36.0%
- Adjusted gross income per tax return, 2022
- $72,64213,330 returns; wages 72% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 45431?
FHFA's house price index for 45431, built from repeat sales and appraisals of the same homes, rose 104% from 2015 to 2025 and rose 56% from 2020 to 2025, and moved +5.2% in 2025.
- Median home value (owners' estimate)
- $209,500
- Median gross rent
- $1,327
- Homes owned by their occupants
- 50.4%
- Housing units
- 13,565
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 45431?
626 business establishments had a location in this ZIP code in 2023, 24 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade146
- Professional, scientific, and technical services109
- Accommodation and food services92
- Health care and social assistance76
- Other services (except public administration)51
- Finance and insurance32
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 45431?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 45432 | Dayton | 15,055 | $83k | 1.7 mi |
| 45403 | Dayton | 13,608 | $38k | 3.5 mi |
| 45404 | Dayton | 9,826 | $39k | 4.0 mi |
| 45434 | Dayton | 12,529 | $136k | 4.0 mi |
| 45324 | Fairborn | 41,194 | $65k | 5.9 mi |
| 45435 | Dayton | 134 | – | 1.6 mi (near) |
| 45430 | Dayton | 7,371 | $116k | 3.2 mi (near) |
| 45420 | Dayton | 24,411 | $61k | 3.9 mi (near) |
| 45410 | Dayton | 14,694 | $47k | 4.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.