18603 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Columbia County
Centroid: Latitude 41.057, Longitude -76.245
Time Zone: Eastern Time Zone (UTC -5 hours)
Observes DST: Yes

ZIP Code 18603 has segments in 2 Counties (Columbia, Luzerne).

Businesses Addresses: 582
PO Box Addresses: 157
Residential Addresses: 8,310

Multi-Family Addresses: 176
Single Family Addresses: 8,134

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

Berwick, PA 18603 Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	18,648 (100%)
Population in Households	18,470 (99.0%)
Population in Families	13,849 (74.3%)
Population in Group Quarters¹	178 ( 1.0%)
Population Density	343
Diversity Index²	33


INCOME
Median Household Income	$62,170
Average Household Income	$78,994
% of Income for Mortgage⁴	21%
Per Capita Income	$34,116
Wealth Index⁵	66
Socioeconomic Status Index⁶	Moderate (46.9)

HOUSING
Total HU (Housing Units)	9,094 (100%)
Owner Occupied HU	5,694 (62.6%)
Renter Occupied HU	2,355 (25.9%)
Vacant Housing Units	1,045 (11.5%)
Median Home Value	$204,078
Average Home Value	$230,733
Housing Affordability Index³	107

HOUSEHOLDS
Total Households	8,049
Average Household Size	2.29
Family Households	4,892
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Berwick, PA 18603 - Peer Comparisons by Rank and Percentile

The table below compares 18603 to the other 1,696 ZIP Codes in Pennsylvania by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	0.07%	0.05%
Households	0.14%	0.05%
Families		-0.11%
Median Household Income		1.97%
Per Capita Income		2.56%
Owner Occupied HU		0.32%

Variable Description	Rank	Percentile
Total Population	# 225	87th
Population Density	# 743	56th
Median Household Income	# 1236	27th
Housing Affordability Index	# 1004	59th
Per Capita Income	# 1086	36th
Diversity Index	# 475	72nd

18603 ZIP Code Profile, Map, Data & Demographics

ZIP Code 18603: Basic Data & USPS Preferred City Name

Berwick, PA 18603 Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Berwick, PA 18603 - Peer Comparisons by Rank and Percentile

Popular Places Near ZIP Code 18603

Use HTL Address Research for a Pennsylvania Address and get...

Quick & Easy Ways to...

Pennsylvania Census Data Comparison Tool

More Tools and Resources:

Columbia County