18034 ZIP Code — Center Valley, PA

Lehigh County, Pennsylvania

ZIP code 18034 is located in Center Valley, Pennsylvania, within Lehigh County. It covers approximately 11.01 square miles and serves a population of 9,228 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 484/610.

About ZIP code 18034

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $395,200. Owner-occupancy is high at 91%, well above the national average.

The gap between median ($126,149) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% 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 23 minutes is near the national average.

Educational attainment is high — 54% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 18034 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

9,228

population

11.01

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

18034 ZIP code map

Cities in ZIP code 18034

Below are the cities the US Postal Service accepts for ZIP code 18034. Using any city not on this list may result in mail delivery delays.

City	Status
Center Valley	Preferred

Nearby ZIP codes

18036 Coopersburg (3.2 mi) 18015 Bethlehem (3.5 mi) 18103 Allentown (4.6 mi) 18099 Emmaus (4.8 mi) 18098 Emmaus (4.8 mi) 18025 Bethlehem (5 mi) 18049 Emmaus (5.1 mi) 18101 Allentown (5.7 mi) 18102 Allentown (6 mi) 18955 Richlandtown (6 mi) 18016 Bethlehem (6.1 mi) 18018 Bethlehem (6.2 mi)

Demographics updated 05/2026

Population
Total population	9,228
Population density	838 / sq mi
State FIPS	42
County FIPS	077

Geography
Land area	11.01 sq mi
Water area	0.06 sq mi
Latitude	40.5413
Longitude	-75.4054
Timezone	Eastern (ET)
Area code	484/610

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.8%	37.9%	39.8%
$50k – $100k	27.9%	30.5%	30.8%
$100k – $200k	33.3%	24.2%	22.4%
Over $200k	22.0%	7.4%	7.1%

Demographics & statistics

9,228

Population

838

People per sq mi

42.3

Median age

$126,149

Median household income

$65,174

Per capita income

$395,200

Median home value

$1,227

Median monthly rent

90.5%

Home ownership

5.0%

Poverty rate

4.3%

Unemployment

2,931

Housing units

54.1%

Bachelor's or higher

Age distribution

Male Female

169

Under 5

179

230

5–9

245

234

10–14

249

517

15–19

548

308

20–24

327

313

25–34

333

530

35–44

563

523

45–54

555

427

55–59

453

399

60–64

423

483

65–74

512

247

75–84

262

85+

102

← Male

Female →

Age summary

Group	Count	%
Under 18	1,639	17.8%
18 and over	7,589	82.2%
65 and over	1,703	18.5%
Median age	42.3 years

Race & ethnicity

White 84.9%

Hispanic or Latino 4.6%

Two or more races 4.3%

Asian 3.9%

Other race 1.4%

Black or African American 1%

Group	Count	%
White	8,209	84.9%
Hispanic or Latino	440	4.6%
Two or more races	412	4.3%
Asian	380	3.9%
Other race	133	1.4%
Black or African American	94	1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.8%	37.9%	39.8%
$50k – $100k	27.9%	30.5%	30.8%
$100k – $200k	33.3%	24.2%	22.4%
Over $200k	22.0%	7.4%	7.1%

Under $10k 2.0%

$10k–$15k 0.7%

$15k–$25k 1.6%

$25k–$35k 1.4%

$35k–$50k 4.8%

$50k–$75k 15.6%

$75k–$100k 8.4%

$100k–$150k 25.0%

$150k–$200k 15.9%

$200k+ 24.5%

Range	% of households
Under $10k	2.0%
$10k–$15k	0.7%
$15k–$25k	1.6%
$25k–$35k	1.4%
$35k–$50k	4.8%
$50k–$75k	15.6%
$75k–$100k	8.4%
$100k–$150k	25.0%
$150k–$200k	15.9%
$200k+	24.5%
Median income	$126,149

Housing

Home values

Under $50k 2.7%

$50k–$100k 1.1%

$100k–$150k 0.9%

$150k–$200k 3.6%

$200k–$300k 17.5%

$300k–$500k 39.2%

$500k–$1M 31.2%

$1M+ 3.8%

Housing overview

Metric	Value
Median home value	$395,200
Median rent / month	$1,227
Owner occupied	90.5%
Renter occupied	9.5%
Vacant	3.7%
Single-family detached	76.0%
Large apartment buildings	3.4%
Mobile homes	3.0%
Median rooms	7.3
Avg household size (owned)	2.73

Year built

Era	%
2020 or later	3.2%
2010–2019	11.7%
2000–2009	20.4%
1990–1999	18.5%
1980–1989	3.6%
1970–1979	15.0%
1960–1969	11.4%
1950–1959	10.1%
1940–1949	3.3%
1939 or earlier	3.0%

Bedrooms

Size	% of units
No bedroom (studio)	3.7%
1 bedroom	2.2%
2 bedrooms	6.1%
3 bedrooms	46.3%
4 bedrooms	34.8%
5+ bedrooms	7.0%

Vehicles per household

Vehicles	% of households
No vehicle	3.9%
1 vehicle	18.0%
2 vehicles	49.7%
3 or more	28.4%

Heating fuel

Fuel type	%
Utility gas	44.8%
Electricity	32.5%
Propane / LP gas	2.7%
Fuel oil	16.2%
Wood	1.6%
Solar	0.7%

Households & families

Household type	Count	%
Married-couple family	2,087	67.2%
Cohabiting couple	124	4.0%
Male householder, no spouse	277	8.9%
Female householder, no spouse	618	19.9%
Households with children under 18	794	25.6%
Households with seniors (65+)	1,155	37.2%
Average household size	2.65

Marital status

Status	Male	Female
Never married	33.5%	31.8%
Married	58.0%	52.9%
Separated	0.0%	0.7%
Widowed	2.3%	6.1%
Divorced	6.2%	8.6%

Education

Less than 9th grade 0.4%

Some HS, no diploma 1.4%

HS graduate 20.3%

Some college, no degree 14.6%

Associate's degree 9.3%

Bachelor's degree 28.9%

Graduate / professional 25.1%

Metric	%
HS diploma or higher	98.2%
Bachelor's or higher	54.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	85	3.0%
Kindergarten	89	3.2%
Elementary school	747	26.7%
High school	512	18.3%
College / grad school	1,361	48.7%

Employment

Industry of employment

Education & healthcare 28.7%

Manufacturing 14.1%

Arts, food & hospitality 11.5%

Retail trade 10.4%

Professional & management 9.5%

Finance & real estate 6.8%

Transportation & utilities 6.2%

Public administration 3.5%

Other services 2.7%

Construction 2.6%

Information 2.4%

Wholesale trade 1.5%

Occupation

Category	%
Management, business & arts	48.7%
Service	12.8%
Sales & office	17.5%
Natural resources & construction	6.0%
Production & transportation	15.1%

Employment type

Type	%
Private sector	81.0%
Government	14.8%
Self-employed	4.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.2%
Carpool	7.3%
Public transit	0.6%
Walk	0.9%
Work from home	19.3%
Other means	0.6%
Avg commute (minutes)	22.6

Poverty

All people 5.0%

Under 18 years 8.6%

18 and over 4.2%

Married-couple families 1.6%

Female-led households 28.0%

Income support

Source	% of households
Social Security	37.3%
Retirement income	33.2%
Supplemental Security	4.7%
Cash public assistance	2.9%
Food stamps / SNAP	3.6%

Health indicators

Condition	%
Obesity	29.0%
High blood pressure	25.7%
High cholesterol	29.1%
Diabetes	7.3%
Heart disease	4.7%
Stroke	2.0%
Asthma	9.5%
Arthritis	20.7%
Kidney disease	2.1%
Pulmonary disease	4.6%
Cancer	5.9%

Behavior / access	%
Smoking	12.9%
Binge drinking	20.5%
No physical activity	17.0%
Less than 7 hrs sleep	34.2%
Depression	20.9%
Fair or poor health	8.9%
Poor mental health	14.2%
Poor physical health	7.5%
No health insurance	7.9%
Visited doctor (checkup)	77.5%
Visited dentist	75.6%
Cholesterol screening	89.5%
Teeth loss	9.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	388	5.1%

Disability	%
Any disability	9.4%
Under 18	1.2%
18–64 years	6.5%
65 and over	27.3%

Health insurance coverage

Type	%
Private insurance	84.2%
Public insurance	28.0%
No insurance	1.3%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,880	96.2%
Spanish	135	1.5%
Other Indo-European	55	0.6%
Asian & Pacific Islander	18	0.2%
Other languages	62	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	8,576	92.9%
Born in same state	8,547	92.6%
Born in different state	5,979	64.8%
Foreign born	29	0.3%
Naturalized citizen	652	7.1%
Not a US citizen	453	69.5%

Ancestry

Ancestry	Count	%
Italian	1,442	15.6%
French	905	9.8%
Arab	469	5.1%
Irish	179	1.9%

Ancestry	Count	%
English	123	1.3%
Norwegian	29	0.3%
German	17	0.2%
Polish	11	0.1%

Technology access

Metric	% of households
Computer access	33.7%
Internet access	97.5%

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

Frequently asked questions about ZIP code 18034

What city is ZIP code 18034 in?

ZIP code 18034 is primarily assigned to Center Valley, Pennsylvania.

What county is ZIP code 18034 in?

ZIP code 18034 falls within Lehigh County, Pennsylvania.

Is ZIP code 18034 mostly owner-occupied?

91% of occupied units in ZIP code 18034 are owner-occupied, well above the national average.

How educated is the population of ZIP code 18034?

54% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 18034 have a large retiree population?

37% of households in ZIP code 18034 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 18034?

The median household income in ZIP code 18034 is $126,149, above the national median of ~$75,000.

What timezone is ZIP code 18034 in?

ZIP code 18034 observes the EST timezone.