18020 ZIP Code — Bethlehem, PA

Northampton County, Pennsylvania

ZIP code 18020 is located in Bethlehem, Pennsylvania, within Northampton County. It covers approximately 13.02 square miles and serves a population of 21,153 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 610.

About ZIP code 18020

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $325,800. Owner-occupancy is high at 87%, well above the national average.

Median household income is $118,048. The poverty rate of 6% is below the national average. 37% 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 26 minutes is near the national average.

Educational attainment is near the national average, with 42% of residents holding a bachelor's degree or higher.

Overall, ZIP code 18020 reflects a community defined by high homeownership and a significant Social Security-dependent population.

21,153

population

13.02

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

18020 ZIP code map

Cities in ZIP code 18020

Below are the cities the US Postal Service accepts for ZIP code 18020. Using any city not on this list may result in mail delivery delays.

City	Status
Bethlehem	Preferred

Nearby ZIP codes

18017 Bethlehem (3.2 mi) 18045 Easton (3.3 mi) 18016 Bethlehem (3.6 mi) 18018 Bethlehem (4.2 mi) 18109 Allentown (5.5 mi) 18055 Hellertown (5.6 mi) 18003 Lehigh Valley (5.7 mi) 18042 Easton (5.7 mi) 18015 Bethlehem (6.1 mi) 18064 Nazareth (6.1 mi) 18032 Catasauqua (7.3 mi) 18040 Easton (7.6 mi)

Demographics updated 05/2026

Population
Total population	21,153
Population density	1,625 / sq mi
State FIPS	42
County FIPS	095

Geography
Land area	13.02 sq mi
Water area	0.17 sq mi
Latitude	40.6680
Longitude	-75.3302
Timezone	Eastern (ET)
Area code	610

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	34.3%	39.8%
$50k – $100k	28.2%	31.7%	30.8%
$100k – $200k	35.5%	26.5%	22.4%
Over $200k	13.1%	7.5%	7.1%

Demographics & statistics

21,153

Population

1,625

People per sq mi

43.2

Median age

$118,048

Median household income

$51,521

Per capita income

$325,800

Median home value

$1,463

Median monthly rent

86.6%

Home ownership

5.5%

Poverty rate

4.8%

Unemployment

6,942

Housing units

41.5%

Bachelor's or higher

Age distribution

Male Female

590

Under 5

618

325

5–9

339

648

10–14

677

847

15–19

885

733

20–24

767

1,078

25–34

1,128

1,181

35–44

1,235

1,245

45–54

1,302

881

55–59

921

751

60–64

786

1,091

65–74

1,142

625

75–84

653

345

85+

360

← Male

Female →

Age summary

Group	Count	%
Under 18	4,001	18.9%
18 and over	17,152	81.1%
65 and over	4,216	19.9%
Median age	43.2 years

Race & ethnicity

White 72.4%

Hispanic or Latino 8.3%

Two or more races 6.4%

Asian 4.7%

Black or African American 4%

Other race 3.6%

Native Hawaiian / Pacific Islander 0.5%

Group	Count	%
White	16,717	72.4%
Hispanic or Latino	1,922	8.3%
Two or more races	1,480	6.4%
Asian	1,088	4.7%
Black or African American	928	4%
Other race	825	3.6%
Native Hawaiian / Pacific Islander	108	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	34.3%	39.8%
$50k – $100k	28.2%	31.7%	30.8%
$100k – $200k	35.5%	26.5%	22.4%
Over $200k	13.1%	7.5%	7.1%

Under $10k 2.9%

$10k–$15k 1.3%

$15k–$25k 1.8%

$25k–$35k 4.0%

$35k–$50k 8.1%

$50k–$75k 12.8%

$75k–$100k 11.4%

$100k–$150k 24.6%

$150k–$200k 15.5%

$200k+ 17.5%

Range	% of households
Under $10k	2.9%
$10k–$15k	1.3%
$15k–$25k	1.8%
$25k–$35k	4.0%
$35k–$50k	8.1%
$50k–$75k	12.8%
$75k–$100k	11.4%
$100k–$150k	24.6%
$150k–$200k	15.5%
$200k+	17.5%
Median income	$118,048

Housing

Home values

Under $50k 0.6%

$50k–$100k 1.0%

$100k–$150k 0.9%

$150k–$200k 7.0%

$200k–$300k 32.1%

$300k–$500k 48.5%

$500k–$1M 9.2%

$1M+ 0.7%

Housing overview

Metric	Value
Median home value	$325,800
Median rent / month	$1,463
Owner occupied	86.6%
Renter occupied	13.4%
Vacant	3.3%
Single-family detached	78.2%
Large apartment buildings	2.5%
Mobile homes	0.0%
Median rooms	7.1
Avg household size (owned)	2.65

Year built

Era	%
2020 or later	0.3%
2010–2019	5.0%
2000–2009	13.2%
1990–1999	22.0%
1980–1989	21.4%
1970–1979	15.7%
1960–1969	7.0%
1950–1959	6.8%
1940–1949	1.9%
1939 or earlier	6.7%

Bedrooms

Size	% of units
No bedroom (studio)	2.0%
1 bedroom	3.5%
2 bedrooms	11.8%
3 bedrooms	43.1%
4 bedrooms	35.9%
5+ bedrooms	3.7%

Vehicles per household

Vehicles	% of households
No vehicle	3.1%
1 vehicle	23.3%
2 vehicles	44.7%
3 or more	28.9%

Heating fuel

Fuel type	%
Utility gas	40.8%
Electricity	41.3%
Propane / LP gas	3.3%
Fuel oil	12.6%
Wood	0.3%
Solar	0.1%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	4,784	62.0%
Cohabiting couple	278	3.6%
Male householder, no spouse	1,207	15.6%
Female householder, no spouse	1,445	18.7%
Households with children under 18	2,367	30.7%
Households with seniors (65+)	2,741	35.5%
Average household size	2.65

Marital status

Status	Male	Female
Never married	30.8%	27.9%
Married	58.8%	53.5%
Separated	2.9%	1.3%
Widowed	2.3%	10.4%
Divorced	5.2%	6.9%

Education

Less than 9th grade 2.4%

Some HS, no diploma 2.6%

HS graduate 27.8%

Some college, no degree 16.5%

Associate's degree 9.3%

Bachelor's degree 25.1%

Graduate / professional 16.4%

Metric	%
HS diploma or higher	95.0%
Bachelor's or higher	41.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	143	3.0%
Kindergarten	145	3.0%
Elementary school	1,739	36.1%
High school	1,065	22.1%
College / grad school	1,719	35.7%

Employment

Industry of employment

Education & healthcare 28.1%

Manufacturing 16.1%

Professional & management 10.3%

Retail trade 8.2%

Finance & real estate 6.7%

Transportation & utilities 5.9%

Wholesale trade 5.3%

Arts, food & hospitality 4.7%

Other services 4.4%

Public administration 3.6%

Construction 3.3%

Information 3.2%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	54.8%
Service	10.3%
Sales & office	18.9%
Natural resources & construction	5.5%
Production & transportation	10.4%

Employment type

Type	%
Private sector	83.5%
Government	9.5%
Self-employed	7.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.1%
Carpool	3.8%
Public transit	2.2%
Walk	1.0%
Work from home	12.4%
Other means	3.6%
Avg commute (minutes)	26.3

Poverty

All people 5.5%

Under 18 years 9.0%

18 and over 4.7%

Married-couple families 1.2%

Female-led households 12.5%

Income support

Source	% of households
Social Security	36.9%
Retirement income	34.2%
Supplemental Security	3.9%
Cash public assistance	2.4%
Food stamps / SNAP	6.7%

Health indicators

Condition	%
Obesity	29.5%
High blood pressure	31.6%
High cholesterol	32.1%
Diabetes	9.8%
Heart disease	6.2%
Stroke	2.7%
Asthma	9.4%
Arthritis	28.7%
Kidney disease	2.7%
Pulmonary disease	6.1%
Cancer	7.2%

Behavior / access	%
Smoking	15.6%
Binge drinking	18.2%
No physical activity	19.8%
Less than 7 hrs sleep	34.4%
Depression	20.9%
Fair or poor health	11.5%
Poor mental health	13.7%
Poor physical health	9.2%
No health insurance	9.0%
Visited doctor (checkup)	78.0%
Visited dentist	71.0%
Cholesterol screening	91.6%
Teeth loss	10.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,134	6.6%

Disability	%
Any disability	10.5%
Under 18	2.4%
18–64 years	6.9%
65 and over	29.9%

Health insurance coverage

Type	%
Private insurance	81.9%
Public insurance	32.6%
No insurance	2.1%
Uninsured under 19	1.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	19,945	94.3%
Spanish	690	3.5%
Other Indo-European	336	1.7%
Asian & Pacific Islander	280	1.4%
Other languages	74	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	18,967	89.7%
Born in same state	18,613	88.0%
Born in different state	12,819	60.6%
Foreign born	354	1.7%
Naturalized citizen	2,186	10.3%
Not a US citizen	1,683	77.0%

Ancestry

Ancestry	Count	%
Italian	3,381	16%
French	1,399	6.6%
Arab	1,265	6%
Irish	563	2.7%

Ancestry	Count	%
English	261	1.2%
German	87	0.4%
Polish	59	0.3%
Norwegian	54	0.3%

Technology access

Metric	% of households
Computer access	36.5%
Internet access	96.4%

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

Frequently asked questions about ZIP code 18020

What city is ZIP code 18020 in?

ZIP code 18020 is primarily assigned to Bethlehem, Pennsylvania.

What county is ZIP code 18020 in?

ZIP code 18020 falls within Northampton County, Pennsylvania.

Is ZIP code 18020 mostly owner-occupied?

87% of occupied units in ZIP code 18020 are owner-occupied, well above the national average.

Does ZIP code 18020 have a large retiree population?

37% of households in ZIP code 18020 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 18020?

The median household income in ZIP code 18020 is $118,048, above the national median of ~$75,000.

What is the typical home value in ZIP code 18020?

The median home value in ZIP code 18020 is $325,800.

What timezone is ZIP code 18020 in?

ZIP code 18020 observes the EST timezone.