Data Last Updated: July 1, 2025

Lehigh County, PA ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Lehigh, PA.	42 ZIP Codes (25 General, 6 PO Box, 3 Unique, & 8 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Lehigh, PA. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	484, 610, 835
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Eastern
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Lehigh, PA from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	374,557 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	42077
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Allentown-Bethlehem-Easton, PA-NJ
Land Area: The approximate amount of land area covered by Lehigh, PA in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	345 square miles
Water Area: The approximate amount of water area covered by Lehigh, PA in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	3 square miles
Coordinates: The latitude/longitude centroid coordinates for Lehigh County, PA.	-75.592336, 40.612701
Quick Link: Copy the direct link to the Lehigh, PACounty page and use anywhere you like!	https://www.zip-codes.com/county/pa-lehigh.asp

Lehigh, PA ZIP Code Boundaries

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Lehigh County, PA Covers 42 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 18011	General	Alburtis	5,859	1.56%
ZIP Code 18015 *	General	Bethlehem	33,286	--
ZIP Code 18017 *	General	Bethlehem	39,663	--
ZIP Code 18018 *	General	Bethlehem	32,388	--
ZIP Code 18031	General	Breinigsville	11,369	3.04%
ZIP Code 18032	General	Catasauqua	9,489	2.53%
ZIP Code 18034	General	Center Valley	9,271	2.48%
ZIP Code 18036	General	Coopersburg	14,084	3.76%
ZIP Code 18037	General	Coplay	7,444	1.99%
ZIP Code 18041 *	General	East Greenville	5,632	--
ZIP Code 18046	P.O. Box	East Texas	66	0.02%
ZIP Code 18049	General	Emmaus	18,440	4.92%
ZIP Code 18051	General	Fogelsville	3,343	0.89%
ZIP Code 18052	General	Whitehall	29,317	7.83%
ZIP Code 18053	General	Germansville	2,347	0.63%
ZIP Code 18059	General	Laurys Station	1,158	0.31%
ZIP Code 18060	P.O. Box	Limeport	0	0.00%
ZIP Code 18062	General	Macungie	25,802	6.89%
ZIP Code 18065	P.O. Box	Neffs	189	0.05%
ZIP Code 18066	General	New Tripoli	5,834	1.56%
ZIP Code 18068	P.O. Box	Old Zionsville	0	0.00%
ZIP Code 18069	General	Orefield	7,863	2.10%
ZIP Code 18078	General	Schnecksville	6,996	1.87%
ZIP Code 18079	P.O. Box	Slatedale	415	0.11%
ZIP Code 18080	General	Slatington	11,454	3.06%
ZIP Code 18087	General	Trexlertown	747	0.20%
ZIP Code 18092	General	Zionsville	3,297	0.88%
ZIP Code 18098	Unique	Emmaus	0	0.00%
ZIP Code 18099	Unique	Emmaus	0	0.00%
ZIP Code 18101	General	Allentown	5,108	1.36%
ZIP Code 18102	General	Allentown	51,567	13.77%
ZIP Code 18103	General	Allentown	48,358	12.91%
ZIP Code 18104	General	Allentown	47,289	12.63%
ZIP Code 18105	P.O. Box	Allentown	0	0.00%
ZIP Code 18106	General	Allentown	7,477	2.00%
ZIP Code 18109	General	Allentown	18,915	5.05%
ZIP Code 18195	General	Allentown	0	0.00%
ZIP Code 18951 *	General	Quakertown	36,111	--
ZIP Code 19529 *	General	Kempton	2,986	--
ZIP Code 19530 *	General	Kutztown	14,830	--
ZIP Code 19539 *	General	Mertztown	4,488	--

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Lehigh, PA, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Lehigh, PA Information

Lehigh County, PA Covers 42 ZIP Codes. This includes 25 General ZIP Codes, 6 PO Box ZIP Codes, and 3 Unique (reserved for Business and Volume Mail Receivers). There are also 8 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Lehigh County.

The population for Lehigh County is 374,557, according to the U.S. Census. Population Density is 1,085.67 persons per square mile. With 149,830 Housing Units, the Average Household Size is 2.57 persons. There are 142,970 Family Households with an Average Family Size of 3.10 persons. 5.58% of the population is without Health Insurance. The 61.02% Employment Rate is 1.22% above the national average of 59.8%.257,679 people aged 25+ have some educational achievement, with 33.38% (or 86,009 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 3 area codes serving this area including484, 610 and 835. Lehigh is also located in the Eastern timezone and the current local time is shown above.

Lehigh is part of the Allentown-Bethlehem-Easton, PA-NJ Core Based Statistical Area (CBSA). Its CBSA Code is 10900.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Lehigh, PA have 140,900 Residential mailboxes and 8,322 Business mailboxes.There are 8,077 businesses with a total of 165,736 employees. That is an average of 20.5 employees per business. Annual payroll for these businesses is $10,164,381,000. Other Demographics

Lehigh County Demographic Profile

Population & People

Total Population

374,557

Income

Median Household Income

$77,493

Housing

Total Housing Units

149,830

Health

Without Healthcare Coverage

5.58%

Business & Economy

Total Businesses

8,077

Families

Total Households

142,970

Employment

Employment Rate

61.02%

Education

Bachelor's Degree or Higher

33.38%

Total Population: Total number of people from the 2020 U.S. Census for Lehigh, PA. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	374,557
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Lehigh, PA. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	364,319
Total Households: Total number of Households from the 2020 U.S. Census for Lehigh, PA. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	142,970
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	149,830
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.57
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	3.10

Other Lehigh Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	140,900
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	8,322
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	173,637
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	103,390
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	17,182

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	8,077
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$2,429,185,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$10,164,381,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	165,736

Sum of all ZIP Codes assigned Lehigh, PA as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov