Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/OH/COUNTY/NOBLE

Noble County, OH ZIP codes

There are 8 ZIP codes in Noble County, OH, in 8 towns, from 43711 to 45745. The largest are 43724 (Caldwell), 43772 (Pleasant City) and 45745 (Lower Salem). 2 more cross into it from a neighbouring county: 43773 and 43732.

The county seat is Caldwell.

ZIP codes
8
Partly in it
2 more
Towns
8
County seat
Caldwell
County FIPS
39121
State
Ohio
Population
14,282
Median household income
$56,098
Land area
398 sq mi

Noble County ZIP codes by town

Caldwell (county seat)
43724

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Noble County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Noble County.

Map of Noble County ZIP codes

4371143717437244377243779437884572745745

The ZIP codes of Noble County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Noble County in numbers

About 14,282 people live in Noble County, in 4,619 households, the 85th most populous of Ohio's 88 counties. The median household income is $56,098 a year, 21% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $163,600 (24% below the Ohio median), and median gross rent is $707 a month. The median age is 53.4; 15.7% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 23 minutes.

Population14,282Noble14,282
Households4,619Noble4,619
Median age53.4Noble53.4Ohio39.7US 38.9
Median household income$56,098Noble$56,098Ohio$71,389US $80,734
Median home value$163,600Noble$163,600Ohio$214,800US $332,700
Median gross rent$707Noble$707Ohio$1,034US $1,413
Bachelor's degree or higher15.7%Noble15.7%Ohio31.5%US 35.7%
Mean commute23.0 minNoble23.0 minOhio23.4 minUS 26.4 min
Population density36 / sq miNoble36 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Noble County

Largest towns in Noble County
TownZIP codesPopulation
Caldwell 1 1,667
Pleasant City 1 551
Belle Valley 1 186
Sarahsville 1 159
Summerfield 1 149
Dexter City 1 120
Lower Salem 1 92

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Noble County.

Not sure you are in Noble County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Noble County, with figures

ZIP codes in Noble County
ZIP City Type Population Median income Median home
43711 Ava , OH Standard 0 — —
43717 Belle Valley , OH Standard 166 $48,333 $72,500
43724 Caldwell , OH Standard 9,133 $64,688 $170,400
43772 Pleasant City , OH Standard 1,544 $47,344 $120,300
43779 Sarahsville , OH Standard 654 — $163,800
43788 Summerfield , OH Standard 735 — $172,400
45727 Dexter City , OH Standard 944 $22,564 $112,100
45745 Lower Salem , OH Standard 1,049 $44,250 $105,700

Cite this page

zipcodes.pro. “Noble County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/oh/county/noble

Underlying data is public domain or openly licensed — sources, vintages and licences.