County ZIP codes · Pennsylvania · FIPS 42123

Warren County, PA ZIP Codes

Warren County, Pennsylvania has 24 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 20 residential and 4 for PO boxes or a single organization. 16 of the residential ones lie mainly in Warren County and 4 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $48,963 in 16354 (Titusville) to $95,192 in 16345 (Russell) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

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

How different are its ZIP codes?

16354 · $49k 16345 · $95k

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $53,947 and $59,420.

They carry 20 postal town names.

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

All 20 residential ZIP codes in Warren County

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

Residential ZIP codes mainly in Warren County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
16365	Warren	17,292	124	$59k	$123k	100%
16345	Russell	3,436	37	$95k	$186k	100%
16371	Youngsville	3,211	102	$58k	$117k	100%
16350	Sugar Grove	2,477	50	$70k	$173k	100%
16340	Pittsfield	1,763	19	$57k	$127k	100%
16313	Clarendon	1,653	14	$54k	$97k	100%
16347	Sheffield	1,596	15	$58k	$79k	57%
16351	Tidioute	1,576	17	$52k	$92k	87%
16436	Spring Creek	639	13	$48k	$176k	100%
16402	Bear Lake	624	24	$54k	$92k	100%
16420	Grand Valley	515	10	$54k	$82k	100%
16405	Columbus	514	27	$73k	$159k	100%
16329	Irvine	441	98	$64k	$95k	100%
16352	Tiona	263	24	$40k	$124k	100%
16416	Garland	113	29	$75k	$341k	100%
16312	Chandlers Valley	31	1,107	–	–	100%

Partly in Warren County

Residential ZIP codes mainly in another county that reach at least 1% into Warren County, by their share here
						In this county
16407	Corry	10,525	93	$59k	$134k	24%
16434	Spartansburg	3,120	50	$59k	$145k	17%
16354	Titusville	9,989	81	$49k	$103k	8%
16701	Bradford	16,556	75	$65k	$107k	5%

Download the 24 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?

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

Share of each ZIP code's land in Warren County and in the neighboring counties
ZIP	In Warren	Elsewhere
16701	5%	McKean County 95%
16407	24%	Erie County 72%; Crawford County 4%
16354	8%	Venango County 52%; Crawford County 41%
16434	17%	Crawford County 83%
16347	57%	Forest County 43%
16351	87%	Forest County 13%

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

PO Box and single-organization ZIP codes

ZIP codes in Warren County without a residential area (GeoNames postal codes)
ZIP	Postal name
16366	Warren
16367	Warren
16368	Irvine
16369	Irvine

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Warren County's ZIP codes use 3 prefixes: 163, 164 and 167.

Three-digit prefixes of Warren 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 Warren County's
Prefix	Sectional center	Here	All codes
163	Pittsburgh, PA (SCF 150)	16	49
164	Pittsburgh, PA (SCF 150)	7	35
167	Rochester, NY (SCF 144)	1	23

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

Where are the ZIP codes of Warren County?