ZIP Code 45040 – Mason, Ohio | ZipsCode.us
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ZIP Code 45040
Mason, Ohio · Warren
ZIP code 45040 belongs to the city of Mason in Ohio (Warren). See all Ohio ZIP Codes.
ZIP code 45040 belongs to Mason, Ohio, in Warren. If you are mailing a letter or package to this area, use Mason, OH 45040 in the address. On this page you will find the city and county for 45040, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 45040?
The city for ZIP code 45040 is Mason, Ohio. When you write an address in this area, the correct format is: Name, Street Address, Mason, OH 45040.
ZIP Code 45040 County and State
ZIP code 45040 is located in Warren, Ohio. For a complete list of cities and ZIP codes across the state, see the Ohio ZIP Codes page.
Nearby ZIP Codes in Warren
These ZIP codes are in the same county as 45040:
ZIP Code 45040 on the Map
The map below shows the approximate center of ZIP code 45040, near Mason, Ohio. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 39.3357, -84.3149). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 45040
According to public U.S. Census Bureau data, ZIP code 45040 is home to a community in Ohio. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 45040
Need the full ZIP+4 code for a specific street address in Mason? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 45040?
ZIP code 45040 is for Mason, Ohio.
What county is ZIP code 45040 in?
ZIP code 45040 is in Warren, Ohio.
What state is ZIP code 45040 in?
ZIP code 45040 is in Ohio (OH).
How do I find the ZIP+4 for an address in 45040?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 45040?
Nearby ZIP codes include 45005 (Franklin), 45032 (Harveysburg), 45034 (Kings Mills), 45036 (Lebanon), 45039 (Maineville).
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