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County ZIP codes · Pennsylvania · FIPS 42113

Sullivan County, PA ZIP Codes

Sullivan County, Pennsylvania has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Sullivan County and 4 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $53,237 in 17701 (Williamsport) to $71,691 in 18833 (New Albany) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Sullivan County?

17701 · Williamsport: $53k17731 · Eagles Mere: $99k17737 · Hughesville: $70k17758 · Muncy Valley: $59k17768 · Shunk: $55k17814 · Benton: $65k18614 · Dushore: $69k18616 · Forksville: $63k18619 · Hillsgrove: $66k18626 · Laporte: $75k18628 · Lopez: $82k18632 · Mildred: $93k18833 · New Albany: $72k17701186141781417758188331861617737186261861917768186281773117701 · Williamsport: $53k17731 · Eagles Mere: $99k17737 · Hughesville: $70k17758 · Muncy Valley: $59k17768 · Shunk: $55k17814 · Benton: $65k18614 · Dushore: $69k18616 · Forksville: $63k18619 · Hillsgrove: $66k18626 · Laporte: $75k18628 · Lopez: $82k18632 · Mildred: $93k18833 · New Albany: $72k17701186141781417758188331861617737186261861917768186281773117701 · Williamsport: $53k17731 · Eagles Mere: $99k17737 · Hughesville: $70k17758 · Muncy Valley: $59k17768 · Shunk: $55k17814 · Benton: $65k18614 · Dushore: $69k18616 · Forksville: $63k18619 · Hillsgrove: $66k18626 · Laporte: $75k18628 · Lopez: $82k18632 · Mildred: $93k18833 · New Albany: $72k177011861417814177581883318616177371862618619
The residential ZIP codes of Sullivan County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$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 its ZIP codes?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $65,089 and $70,131.

They carry 13 postal town names.

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

All 13 residential ZIP codes in Sullivan County

9 ZIP codes lie mainly in Sullivan County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Sullivan County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
18614 Dushore 1,986 13 $69k $190k 76%
17758 Muncy Valley 943 10 $59k $199k 95%
18616 Forksville 734 11 $63k $218k 87%
18626 Laporte 505 12 $75k $277k 100%
18632 Mildred 430 60 $93k $136k 100%
17768 Shunk 367 12 $55k $146k 100%
17731 Eagles Mere 188 15 $99k $314k 100%
18628 Lopez 185 8 $82k $118k 100%
18619 Hillsgrove 162 6 $66k $203k 82%

Partly in Sullivan County

Residential ZIP codes mainly in another county that reach at least 1% into Sullivan County, by their share here
In this county
17814 Benton 4,669 37 $65k $225k 25%
17701 Williamsport 43,104 440 $53k $184k 10%
18833 New Albany 2,089 22 $72k $204k 8%
17737 Hughesville 5,970 99 $70k $204k 2%

Download the 13 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

8 ZIP codes of Sullivan County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Sullivan County and in the neighboring counties
ZIPIn SullivanElsewhere
1770110%Lycoming County 90%
177372%Lycoming County 98%
1781425%Columbia County 56%; Luzerne County 17%; Lycoming County 2%
188338%Bradford County 92%
1861476%Wyoming County 23%; Bradford County 2%
1775895%Lycoming County 5%
1861687%Bradford County 13%
1861982%Lycoming County 18%

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

Which first three digits do Sullivan County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Sullivan County's ZIP codes use 4 prefixes: 177, 178, 186 and 188.

Three-digit prefixes of Sullivan County'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 Sullivan County's
PrefixSectional centerHereAll codes
177 Harrisburg, PA (SCF 170) 5 44
178 Harrisburg, PA (SCF 170) 1 60
186 Scranton, PA (SCF 184) 6 41
188 Scranton, PA (SCF 184) 1 37

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