There is one unique ZIP code in Caldwell, Ohio and it is 43724. Area code: 740/220.
1
ZIP codes
155.46
sq mi land
1.12
sq mi water
740/220
area code
Caldwell, OH ZIP code map
About Caldwell, OH
Caldwell, Ohio, is a charming small town located in Noble County. Known for its picturesque landscapes and close-knit community, Caldwell offers a unique blend of rural charm and local history. The town serves as a hub for outdoor activities, making it an attractive destination for nature enthusiasts.
Location & geography
Caldwell is situated in southeastern Ohio and encompasses a total area of 156.58 square miles, which includes 155.46 square miles of land and 1.12 square miles of water. It is approximately 25 miles from nearby cities such as Cambridge to the southwest and 38 miles from Zanesville to the northeast. The region’s terrain features rolling hills and beautiful scenery that complement the local waterways.
Community & economy
The character of Caldwell is defined by its friendly residents and a strong sense of community. The town’s economy is supported by industries such as agriculture and small manufacturing, providing a steady source of employment for locals. Daily life here includes various community events and outdoor recreational opportunities that foster social connections among residents.
Transportation
Caldwell is accessible via several main routes, notably State Route 78 and State Route 821, facilitating easy travel to and from the area. The closest major airports are located in Columbus and Pittsburgh, making air travel convenient for residents and visitors alike. Public transportation options are minimal, thus personal vehicles are the primary mode of transit.
History
Caldwell was founded in the early 19th century and has a rich history tied to the development of Noble County. Early key industries included mining and agriculture, which significantly shaped the town's economy. Over the years, Caldwell has hosted numerous events celebrating its heritage, contributing to its unique cultural identity.
Did you know?
A little-known fact about Caldwell is that it is home to the Noble County Fair, which is one of the oldest fairs in Ohio, showcasing the region's agricultural roots. The town also hosts various annual festivals that draw visitors from surrounding areas, further enhancing its cultural landscape.
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions
What is the ZIP code for Caldwell, OH?
Caldwell, OH has one ZIP code: 43724.
What is the main ZIP code for Caldwell, OH?
The primary ZIP code for Caldwell, OH is 43724. The city uses area code 740 or 220 for phone service.
What county is Caldwell, OH in?
Caldwell is located in Noble County, Ohio.
How many ZIP codes are in Caldwell, OH?
Caldwell, OH has 1 ZIP code.
What ZIP code does downtown Caldwell, the county seat of Noble County, use for mailing addresses?
Downtown Caldwell uses ZIP code 43724 for all mailing addresses in the central business district and surrounding residential areas.
If I'm sending mail to a business located in Caldwell near the Noble County Courthouse, what ZIP code should I use?
You should use ZIP code 43724, as all of Caldwell's municipal area, including locations near the historic courthouse, falls within this single ZIP code.
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