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City ZIP codes · Ohio

Middletown, OH ZIP Codes

2 ZIP codes use the postal name Middletown, Ohio (Census 2020 ZCTAs and GeoNames postal codes, October 2026), all residential. Median household income runs from $69,520 in 45042 to $73,732 in 45044 (Census Bureau, ACS 2020-2024). Middletown's most populous ZIP code is 45044, with 56,217 people (ACS 2020-2024); 38% of its land is in the city of Middletown.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Middletown's ZIP codes?

45042: $70k median household income45044: $74k median household income450424504445042: $70k median household income45044: $74k median household income450424504445042: $70k median household income45044: $74k median household income4504245044
The 2 residential ZIP codes named Middletown, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Middletown's ZIP codes?

The highest median household income is in 45044 ($73,732), the lowest in 45042 ($69,520). Home values run from $202,200 in 45042 to $241,600 in 45044.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Middletown

Residential ZIP codes with the postal name Middletown, OH, largest first (ACS 2020-2024); sort by any column
County
45044 Butler County 56,217 1,488 $74k $242k
45042 Butler County 27,652 562 $70k $202k

Download the 2 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

Which counties do Middletown's ZIP codes reach?

Middletown's residential ZIP codes lie in 3 counties: Butler County (2 ZIP codes mainly there), Preble County (part of a ZIP code), Warren County (part of a ZIP code).

Which places do Middletown's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Middletown's residential ZIP codes cover Middletown itself and 2 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Middletown's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Middletown starts with 450.

Three-digit prefixes of Middletown's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Middletown's
PrefixSectional centerHereAll codes
450 Cincinnati, OH (SCF 450) 2 39

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.