18603 ZIP Code — Berwick, PA

Columbia County, Pennsylvania

ZIP code 18603 is located in Berwick, Pennsylvania, within Columbia County. It covers approximately 53.40 square miles and serves a population of 19,147 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 570/272.

About ZIP code 18603

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $152,200. Owner-occupancy sits near the national average at 74%.

Median household income is $58,309. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 21 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks.

19,147

population

53.40

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

18603 ZIP code map

Cities in ZIP code 18603

Below are the cities the US Postal Service accepts for ZIP code 18603. Using any city not on this list may result in mail delivery delays.

City	Status
Berwick	Preferred

Nearby ZIP codes

17859 Orangeville (3.6 mi) 18635 Nescopeck (5.7 mi) 18622 Huntington Mills (7.2 mi) 18655 Shickshinny (7.3 mi) 18660 Wapwallopen (9.3 mi) 17815 Bloomsburg (9.5 mi) 18617 Glen Lyon (10.8 mi) 18249 Sugarloaf (11.6 mi) 18241 Nuremberg (11.6 mi) 17985 Zion Grove (11.7 mi) 17814 Benton (12.3 mi) 17846 Millville (13.3 mi)

Demographics updated 06/2026

Population
Total population	19,147
Population density	359 / sq mi
State FIPS	42
County FIPS	037

Geography
Land area	53.40 sq mi
Water area	1.59 sq mi
Latitude	41.1003
Longitude	-76.2618
Timezone	Eastern (ET)
Area code	570/272

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.2%	47.2%	39.8%
$50k – $100k	32.9%	31.6%	30.8%
$100k – $200k	15.5%	18.0%	22.4%
Over $200k	2.4%	3.3%	7.1%

Demographics & statistics

19,147

Population

359

People per sq mi

46.9

Median age

$58,309

Median household income

$32,360

Per capita income

$152,200

Median home value

$742

Median monthly rent

73.5%

Home ownership

14.2%

Poverty rate

4.8%

Unemployment

7,204

Housing units

20.4%

Bachelor's or higher

Age distribution

Male Female

417

Under 5

442

299

5–9

317

590

10–14

625

422

15–19

447

675

20–24

715

1,085

25–34

1,150

976

35–44

1,035

1,418

45–54

1,503

631

55–59

669

761

60–64

807

1,065

65–74

1,129

596

75–84

632

360

85+

381

← Male

Female →

Age summary

Group	Count	%
Under 18	3,182	16.6%
18 and over	15,965	83.4%
65 and over	4,163	21.7%
Median age	46.9 years

Race & ethnicity

White 90.5%

Two or more races 3.4%

Black or African American 2.8%

Hispanic or Latino 2.4%

American Indian / Alaska Native 0.4%

Asian 0.3%

Other race 0.3%

Group	Count	%
White	17,756	90.5%
Two or more races	666	3.4%
Black or African American	547	2.8%
Hispanic or Latino	479	2.4%
American Indian / Alaska Native	74	0.4%
Asian	53	0.3%
Other race	51	0.3%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	49.2%	47.2%	39.8%
$50k – $100k	32.9%	31.6%	30.8%
$100k – $200k	15.5%	18.0%	22.4%
Over $200k	2.4%	3.3%	7.1%

Under $10k 5.3%

$10k–$15k 4.3%

$15k–$25k 10.0%

$25k–$35k 8.2%

$35k–$50k 15.6%

$50k–$75k 21.9%

$75k–$100k 12.4%

$100k–$150k 14.8%

$150k–$200k 3.2%

$200k+ 4.5%

Range	% of households
Under $10k	5.3%
$10k–$15k	4.3%
$15k–$25k	10.0%
$25k–$35k	8.2%
$35k–$50k	15.6%
$50k–$75k	21.9%
$75k–$100k	12.4%
$100k–$150k	14.8%
$150k–$200k	3.2%
$200k+	4.5%
Median income	$58,309

Housing

Home values

Under $50k 4.5%

$50k–$100k 13.7%

$100k–$150k 30.7%

$150k–$200k 19.6%

$200k–$300k 19.9%

$300k–$500k 7.3%

$500k–$1M 4.2%

$1M+ 0.1%

Housing overview

Metric	Value
Median home value	$152,200
Median rent / month	$742
Owner occupied	73.5%
Renter occupied	26.5%
Vacant	10.7%
Single-family detached	69.9%
Large apartment buildings	4.3%
Mobile homes	7.2%
Median rooms	5.8
Avg household size (owned)	2.30

Year built

Era	%
2020 or later	0.1%
2010–2019	2.2%
2000–2009	2.8%
1990–1999	5.0%
1980–1989	11.7%
1970–1979	20.6%
1960–1969	8.9%
1950–1959	12.2%
1940–1949	7.7%
1939 or earlier	29.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	8.6%
2 bedrooms	23.6%
3 bedrooms	49.4%
4 bedrooms	13.0%
5+ bedrooms	4.1%

Vehicles per household

Vehicles	% of households
No vehicle	8.8%
1 vehicle	31.0%
2 vehicles	39.7%
3 or more	20.6%

Heating fuel

Fuel type	%
Utility gas	39.6%
Electricity	29.0%
Propane / LP gas	5.8%
Fuel oil	21.3%
Wood	1.5%
Solar	0.1%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	3,727	44.2%
Cohabiting couple	998	11.8%
Male householder, no spouse	1,712	20.3%
Female householder, no spouse	1,997	23.7%
Households with children under 18	1,964	23.3%
Households with seniors (65+)	2,944	34.9%
Average household size	2.25

Marital status

Status	Male	Female
Never married	32.7%	25.6%
Married	48.7%	45.5%
Separated	2.3%	1.5%
Widowed	4.5%	12.9%
Divorced	11.7%	14.5%

Education

Less than 9th grade 3.1%

Some HS, no diploma 7.0%

HS graduate 44.8%

Some college, no degree 15.3%

Associate's degree 9.4%

Bachelor's degree 15.1%

Graduate / professional 5.2%

Metric	%
HS diploma or higher	89.9%
Bachelor's or higher	20.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	139	4.4%
Kindergarten	118	3.7%
Elementary school	1,401	44.3%
High school	812	25.7%
College / grad school	692	21.9%

Employment

Industry of employment

Education & healthcare 23.9%

Manufacturing 22.6%

Retail trade 13.1%

Arts, food & hospitality 7.3%

Transportation & utilities 6.7%

Construction 5.6%

Other services 5.1%

Finance & real estate 4.8%

Professional & management 3.9%

Public administration 3.3%

Wholesale trade 1.7%

Agriculture & mining 1.3%

Information 0.7%

Occupation

Category	%
Management, business & arts	26.2%
Service	15.7%
Sales & office	21.5%
Natural resources & construction	12.7%
Production & transportation	23.9%

Employment type

Type	%
Private sector	86.3%
Government	10.6%
Self-employed	3.1%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.4%
Carpool	5.4%
Public transit	0.3%
Walk	4.8%
Work from home	8.7%
Other means	0.4%
Avg commute (minutes)	21.4

Poverty

All people 14.2%

Under 18 years 21.7%

18 and over 12.7%

Married-couple families 4.3%

Female-led households 26.9%

Income support

Source	% of households
Social Security	38.2%
Retirement income	27.6%
Supplemental Security	4.9%
Cash public assistance	2.8%
Food stamps / SNAP	12.0%

Health indicators

Condition	%
Obesity	35.2%
High blood pressure	36.0%
High cholesterol	34.7%
Diabetes	11.7%
Heart disease	8.1%
Stroke	3.7%
Asthma	10.5%
Arthritis	31.5%
Kidney disease	3.4%
Pulmonary disease	9.3%
Cancer	7.8%

Behavior / access	%
Smoking	20.7%
Binge drinking	17.8%
No physical activity	26.1%
Less than 7 hrs sleep	35.4%
Depression	22.4%
Fair or poor health	16.9%
Poor mental health	15.9%
Poor physical health	12.4%
No health insurance	11.4%
Visited doctor (checkup)	78.6%
Visited dentist	62.9%
Cholesterol screening	89.1%
Teeth loss	17.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,430	9.0%

Disability	%
Any disability	18.1%
Under 18	7.2%
18–64 years	15.7%
65 and over	33.5%

Health insurance coverage

Type	%
Private insurance	69.8%
Public insurance	41.8%
No insurance	3.4%
Uninsured under 19	1.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	18,288	95.5%
Spanish	125	0.7%
Other Indo-European	92	0.5%
Asian & Pacific Islander	9	0.0%
Other languages	24	0.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	18,758	98.0%
Born in same state	18,731	97.8%
Born in different state	16,348	85.4%
Foreign born	27	0.1%
Naturalized citizen	389	2.0%
Not a US citizen	311	79.9%

Ancestry

Ancestry	Count	%
Italian	1,933	10.1%
French	1,834	9.6%
Arab	655	3.4%
English	555	2.9%

Ancestry	Count	%
Irish	174	0.9%
Norwegian	124	0.6%
Polish	87	0.5%
German	56	0.3%

Technology access

Metric	% of households
Computer access	44.0%
Internet access	88.9%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 18603

What city is ZIP code 18603 in?

ZIP code 18603 is primarily assigned to Berwick, Pennsylvania.

What county is ZIP code 18603 in?

ZIP code 18603 falls within Columbia County, Pennsylvania.

Does ZIP code 18603 have a large retiree population?

38% of households in ZIP code 18603 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 18603?

The median home value in ZIP code 18603 is $152,200.

What is the population of ZIP code 18603?

ZIP code 18603 has an estimated population of 19,147 residents, with a density of 359 people per square mile.

What is the median household income in ZIP code 18603?

The median household income in ZIP code 18603 is $58,309, below the national median of ~$75,000.

What timezone is ZIP code 18603 in?

ZIP code 18603 observes the EST timezone.