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

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zipcodes.pro — STATE/OH/COUNTY/HIGHLAND

Highland County, OH ZIP codes

There are 7 ZIP codes in Highland County, OH, in 7 towns, from 45123 to 45172. The largest are 45133 (Hillsboro), 45123 (Greenfield) and 45135 (Leesburg). 1 more crosses into it from a neighbouring county: 45171.

The county seat is Hillsboro.

ZIP codes
7
Partly in it
1 more
Towns
7
County seat
Hillsboro
County FIPS
39071
State
Ohio
Population
43,517
Median household income
$65,785
Land area
553 sq mi

Highland County ZIP codes by town

Hillsboro (county seat)
45133

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 Highland County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Highland County.

Map of Highland County ZIP codes

45123451324513345135451424515545172

The ZIP codes of Highland 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.

Highland County in numbers

About 43,517 people live in Highland County, in 16,938 households, the 56th most populous of Ohio's 88 counties. The median household income is $65,785 a year, 8% below the Ohio median of $71,389 (US: $80,734). The median owner-occupied home is valued at $168,900 (21% below the Ohio median), and median gross rent is $780 a month. The median age is 41.0; 16.3% of adults 25 and over hold a bachelor's degree or higher (31.5% across Ohio); the average commute takes 29 minutes.

Population43,517Highland43,517
Households16,938Highland16,938
Median age41.0Highland41.0Ohio39.7US 38.9
Median household income$65,785Highland$65,785Ohio$71,389US $80,734
Median home value$168,900Highland$168,900Ohio$214,800US $332,700
Median gross rent$780Highland$780Ohio$1,034US $1,413
Bachelor's degree or higher16.3%Highland16.3%Ohio31.5%US 35.7%
Mean commute29.1 minHighland29.1 minOhio23.4 minUS 26.4 min
Population density79 / sq miHighland79 / 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 Highland County

Largest towns in Highland County
TownZIP codesPopulation
Hillsboro 1 6,527
Greenfield 1 3,966
Lynchburg 1 1,493
Leesburg 1 1,098
Mowrystown 1 510
Sinking Spring 1 319
Highland 1 113

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 Highland County.

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

Every ZIP code in Highland County, with figures

ZIP codes in Highland County
ZIP City Type Population Median income Median home
45123 Greenfield , OH Standard 8,740 $62,404 $161,700
45132 Highland , OH Standard 87 $35,417 $100,000
45133 Hillsboro , OH Standard 23,443 $61,842 $172,900
45135 Leesburg , OH Standard 5,291 $79,629 $210,000
45142 Lynchburg , OH Standard 4,187 $66,844 $167,100
45155 Mowrystown , OH Standard 510 $72,813 $93,000
45172 Sinking Spring , OH Standard 308 $107,951 $149,100

Cite this page

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

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