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County ZIP codes · Pennsylvania · FIPS 42029

Chester County, PA ZIP Codes

Chester County, Pennsylvania has 71 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 45 residential and 26 for PO boxes or a single organization. 39 of the residential ones lie mainly in Chester County and 6 mainly in a neighboring county; 16 cross the county line. Median household income ranges from $82,371 in 19310 (Atglen) to $211,739 in 19425 (Chester Springs) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Chester County?

17527 · Gap: $95k19073 · Newtown Square: $135k19087 · Wayne: $171k19301 · Paoli: $167k19310 · Atglen: $82k19311 · Avondale: $156k19312 · Berwyn: $204k19316 · Brandamore: –19317 · Chadds Ford: $174k19319 · Cheyney: –19320 · Coatesville: $91k19330 · Cochranville: $110k19333 · Devon: $173k19335 · Downingtown: $143k19341 · Exton: $122k19342 · Glen Mills: $133k19343 · Glenmoore: $160k19344 · Honey Brook: $87k19345 · Immaculata: –19348 · Kennett Square: $124k19350 · Landenberg: $144k19352 · Lincoln University: $165k19355 · Malvern: $169k19358 · Modena: $72k19362 · Nottingham: $89k19363 · Oxford: $107k19365 · Parkesburg: $105k19367 · Pomeroy: –19369 · Sadsburyville: $133k19372 · Thorndale: $115k19373 · Thornton: $193k19374 · Toughkenamon: –19375 · Unionville: $250k+19380 · West Chester: $123k19382 · West Chester: $132k19383 · West Chester: $24k19390 · West Grove: $129k19425 · Chester Springs: $212k19442 · Kimberton: –19457 · Parker Ford: –19460 · Phoenixville: $124k19465 · Pottstown: $108k19475 · Spring City: $97k19520 · Elverson: $100k19543 · Morgantown: $113k19320193631933519348193821935519380194601934319344194651939019330195201935019352175271936219317193421907319425190871947519365195431931019311193411931217527 · Gap: $95k19073 · Newtown Square: $135k19087 · Wayne: $171k19301 · Paoli: $167k19310 · Atglen: $82k19311 · Avondale: $156k19312 · Berwyn: $204k19316 · Brandamore: –19317 · Chadds Ford: $174k19319 · Cheyney: –19320 · Coatesville: $91k19330 · Cochranville: $110k19333 · Devon: $173k19335 · Downingtown: $143k19341 · Exton: $122k19342 · Glen Mills: $133k19343 · Glenmoore: $160k19344 · Honey Brook: $87k19345 · Immaculata: –19348 · Kennett Square: $124k19350 · Landenberg: $144k19352 · Lincoln University: $165k19355 · Malvern: $169k19358 · Modena: $72k19362 · Nottingham: $89k19363 · Oxford: $107k19365 · Parkesburg: $105k19367 · Pomeroy: –19369 · Sadsburyville: $133k19372 · Thorndale: $115k19373 · Thornton: $193k19374 · Toughkenamon: –19375 · Unionville: $250k+19380 · West Chester: $123k19382 · West Chester: $132k19383 · West Chester: $24k19390 · West Grove: $129k19425 · Chester Springs: $212k19442 · Kimberton: –19457 · Parker Ford: –19460 · Phoenixville: $124k19465 · Pottstown: $108k19475 · Spring City: $97k19520 · Elverson: $100k19543 · Morgantown: $113k193201936319335193481938219355193801946019343193441946519390193301952019350193521752719362193171934219073194251908719475193651954319310193111934117527 · Gap: $95k19073 · Newtown Square: $135k19087 · Wayne: $171k19301 · Paoli: $167k19310 · Atglen: $82k19311 · Avondale: $156k19312 · Berwyn: $204k19316 · Brandamore: –19317 · Chadds Ford: $174k19319 · Cheyney: –19320 · Coatesville: $91k19330 · Cochranville: $110k19333 · Devon: $173k19335 · Downingtown: $143k19341 · Exton: $122k19342 · Glen Mills: $133k19343 · Glenmoore: $160k19344 · Honey Brook: $87k19345 · Immaculata: –19348 · Kennett Square: $124k19350 · Landenberg: $144k19352 · Lincoln University: $165k19355 · Malvern: $169k19358 · Modena: $72k19362 · Nottingham: $89k19363 · Oxford: $107k19365 · Parkesburg: $105k19367 · Pomeroy: –19369 · Sadsburyville: $133k19372 · Thorndale: $115k19373 · Thornton: $193k19374 · Toughkenamon: –19375 · Unionville: $250k+19380 · West Chester: $123k19382 · West Chester: $132k19383 · West Chester: $24k19390 · West Grove: $129k19425 · Chester Springs: $212k19442 · Kimberton: –19457 · Parker Ford: –19460 · Phoenixville: $124k19465 · Pottstown: $108k19475 · Spring City: $97k19520 · Elverson: $100k19543 · Morgantown: $113k19320193631933519348193821935519380194601934319344194651939019330195201935017527193621931719342190731942519087
The residential ZIP codes of Chester 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 $107,067 and $160,256.

They carry 43 postal town names.

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

All 45 residential ZIP codes in Chester County

39 ZIP codes lie mainly in Chester County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Chester County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
19320 Coatesville 55,941 686 $91k $330k 100%
19382 West Chester 54,127 1,173 $132k $569k 97%
19335 Downingtown 53,629 1,239 $143k $494k 100%
19380 West Chester 49,856 1,636 $123k $564k 100%
19460 Phoenixville 45,423 1,316 $124k $456k 82%
19087 Wayne 33,528 2,146 $171k $748k 50%
19355 Malvern 29,425 768 $169k $692k 100%
19348 Kennett Square 23,621 641 $124k $543k 100%
19341 Exton 21,709 1,586 $122k $509k 100%
19465 Pottstown 18,564 522 $108k $405k 100%
19363 Oxford 18,231 360 $107k $370k 96%
19425 Chester Springs 17,219 643 $212k $657k 100%
19344 Honey Brook 12,827 387 $87k $321k 97%
19390 West Grove 12,546 428 $129k $418k 100%
19475 Spring City 12,298 748 $97k $400k 100%
19312 Berwyn 12,283 1,284 $204k $855k 96%
19311 Avondale 11,692 932 $156k $541k 100%
19352 Lincoln University 11,484 654 $165k $473k 100%
19350 Landenberg 10,945 391 $144k $533k 100%
19317 Chadds Ford 10,864 498 $174k $625k 57%
19343 Glenmoore 8,450 306 $160k $568k 100%
19365 Parkesburg 8,006 486 $105k $340k 100%
19301 Paoli 7,814 2,176 $167k $550k 100%
19333 Devon 7,471 2,022 $173k $761k 100%
19383 West Chester 6,537 15,676 $24k – 100%
19520 Elverson 6,277 167 $100k $417k 77%
19362 Nottingham 6,092 207 $89k $360k 61%
19330 Cochranville 5,957 178 $110k $387k 100%
19310 Atglen 2,950 221 $82k $316k 92%
19372 Thorndale 1,854 1,983 $115k $337k 100%
19345 Immaculata 768 2,139 – – 100%
19374 Toughkenamon 434 279 – $355k 100%
19316 Brandamore 389 489 – – 100%
19375 Unionville 234 505 $250k+ $614k 100%
19358 Modena 191 1,364 $72k $163k 100%
19457 Parker Ford 148 574 – – 100%
19369 Sadsburyville 122 2,000 $133k – 100%
19367 Pomeroy 21 129 – – 100%
19442 Kimberton no residents 0 – – 100%

Partly in Chester County

Residential ZIP codes mainly in another county that reach at least 1% into Chester County, by their share here
In this county
19319 Cheyney 792 1,222 – $643k 26%
19073 Newtown Square 21,915 1,068 $135k $610k 21%
17527 Gap 6,094 290 $95k $325k 6%
19373 Thornton 2,357 733 $193k $756k 4%
19342 Glen Mills 20,770 1,051 $133k $594k 3%
19543 Morgantown 6,401 299 $113k $361k 2%

Download the 71 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?

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

Share of each ZIP code's land in Chester County and in the neighboring counties
ZIPIn ChesterElsewhere
1938297%Delaware County 3%
1946082%Montgomery County 18%
1908750%Delaware County 35%; Montgomery County 15%
1907321%Delaware County 79%
193423%Delaware County 97%
1936396%Lancaster County 4%
1934497%Lancaster County 3%
1931296%Delaware County 4%
1931757%Delaware County 43%
195432%Berks County 68%; Lancaster County 29%
1952077%Berks County 23%
175276%Lancaster County 94%
1936261%Lancaster County 39%
1931092%Lancaster County 8%
193734%Delaware County 96%
1931926%Delaware County 74%

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

PO Box and single-organization ZIP codes

ZIP codes in Chester County without a residential area (GeoNames postal codes)
ZIPPostal name
19318Chatham
19346Kelton
19347Kemblesville
19351Lewisville
19353Lionville
19354Lyndell
19357Mendenhall
19360New London
19366Pocopson
19371Suplee
19376Wagontown
19381West Chester
19395Westtown
19397Southeastern
19398Southeastern
19399Southeastern
19421Birchrunville
19432Devault
19470Saint Peters
19480Uwchland
19481Valley Forge
19482Valley Forge
19493Valley Forge
19494Valley Forge
19495Valley Forge
19496Valley Forge

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Chester County's ZIP codes use 5 prefixes: 175, 190, 193, 194 and 195.

Three-digit prefixes of Chester 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 Chester County's
PrefixSectional centerHereAll codes
175 Harrisburg, PA (SCF 170) 1 60
190 Philadelphia, PA (SCF 190) 2 85
193 Wilmington, DE (SCF 197) 50 53
194 Philadelphia, PA (SCF 190) 16 59
195 Harrisburg, PA (SCF 170) 2 44

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