PlainZIP

Allentown, PA · standard

ZIP Code 18101

Lehigh County, Pennsylvania - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

3,897
4,305/sq mi
$44,773
Median income
$171,300
Median home value
23.2%
Bachelor's or higher

The verdict

Allentown pairs one of the lowest household incomes in the country with below-median home values, in a suburban-density, renter-heavy area.

9th pct
household income, US ZIPs
35th pct
home value, US ZIPs
4,305
people per sq mi
8%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 18101 against every reporting US ZIP.

ZIP code 18101 covers 0.9 square miles in Allentown, Lehigh County, Pennsylvania (a standard USPS delivery area), with a modest 3,897 residents on file, a density of 4,305 people per square mile, in the New York time zone.

ZIP 18101 reports a modest median household income of $44,773 (42% below the Pennsylvania average), while per-capita income is $28,551. The poverty rate stands at 22.8% and the unemployment rate at 14.7%. Median home value sits at $171,300 (25% below the state average), median rent at $1,430 a month, and owner-occupancy at 8.3%.

Educational attainment sits below the national norm: 23.2% of adults hold a bachelor's degree or higher, the median age is 29.1, and the average commute is 29 minutes. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 18101, plus 6 more within Lehigh County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 18101

Top 5 sectors by establishment count in Allentown, PA

Which industries have the most business establishments in ZIP 18101.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 18101, Allentown, PA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

3,897

Population

0.9

Area (sq mi)

4,305

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 18101?

29.1

Median Age

52.2%

Male

47.8%

Female

17.3%

Foreign-Born

White 24.9%
African American 22.9%
Asian 3.2%
American Indian or Alaska Native 0.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 26.7%
Hispanic or Latino 52.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$44,773

Median Household Income

-42% vs state

$28,551

Per Capita Income

22.8%

Poverty Rate

14.7%

Unemployment Rate

28.8 min

Mean Commute Time

How ZIP 18101 ranks nationally

Allentown, PA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$44,773 9th percentile higher than 9% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). This entry sits in this band. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 56.8%
Bachelor's Degree or Higher 23.2%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,786

Total Housing Units

2,576

Occupied Units

210

Vacant Units

2.00

Avg Household Size

Occupancy Type

Owner 8.3%
Renter 91.7%

$171,300

Median Home Value

-25% vs state

$1,430

Median Rent

1970

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 329 business establishments in ZIP 18101, employing approximately 5,736 people with a combined annual payroll of $523,509,000.

329

Businesses

5,736

Employees

$523.5M

Annual Payroll

17

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 67 20.4%
Accommodation and food services 41 12.5%
Health care and social assistance 36 10.9%
Retail trade 35 10.6%
Finance and insurance 33 10.0%
Other services (except public administration) 25 7.6%
Real estate and rental and leasing 16 4.9%
Administrative and support and waste management and remediation services 16 4.9%
Manufacturing 9 2.7%
Transportation and warehousing 9 2.7%
Construction 8 2.4%
Wholesale trade 7 2.1%
Arts, entertainment, and recreation 7 2.1%
Educational services 6 1.8%
Utilities 5 1.5%
Information 5 1.5%
Management of companies and enterprises 4 1.2%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 18101 vs 18102 →

ZIP 18101 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 18101 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 18101 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 18101 ranks #8 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
18102 Allentown, PA 49,779 0.5 mi
18105 Allentown, PA 12 1.3 mi
18103 Allentown, PA 45,336 2.3 mi
18032 Catasauqua, PA 9,285 3.8 mi
18109 Allentown, PA 16,932 2.8 mi
18104 Allentown, PA 43,236 4.1 mi
18052 Whitehall, PA 26,902 4.2 mi
18018 Bethlehem, PA 32,413 4.3 mi
18016 Bethlehem, PA 0 4.5 mi
18015 Bethlehem, PA 32,832 5.3 mi

More ZIP Codes in Lehigh County

18102 standard
Allentown, PA
Pop: 49,779
18103 standard
Allentown, PA
Pop: 45,336
18104 standard
Allentown, PA
Pop: 43,236
18018 standard
Bethlehem, PA
Pop: 32,413
18052 standard
Whitehall, PA
Pop: 26,902
18062 standard
Macungie, PA
Pop: 24,351

Related Areas

Lehigh County Allentown, PA Pennsylvania

Frequently Asked Questions

What county is ZIP code 18101 in? ▼
ZIP code 18101 (Allentown) is located in Lehigh County, Pennsylvania. Lehigh County contains multiple ZIP codes, see the full list at /counties/lehigh-pa.
What is the population of ZIP code 18101? ▼
ZIP code 18101 in Allentown, PA has a population of 3,897 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 18101? ▼
The median household income in ZIP 18101 is $44,773, which is 41% below the national average of $76,288.
What is the average home value in ZIP 18101? ▼
The median home value in ZIP 18101 is $171,300, which is 38% below the national average of $278,155.
What is the demographic makeup of ZIP 18101? ▼
The largest racial group in ZIP 18101 is Two or More Ethnicities at 26.7%. Hispanic or Latino residents make up 52.0% of the population.
How many businesses are in ZIP code 18101? ▼
ZIP code 18101 has 329 business establishments employing approximately 5,736 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 18101? ▼
The top industries by establishment count in ZIP 18101 are: Professional, scientific, and technical services (67), Accommodation and food services (41), Health care and social assistance (36). There are 17 industry sectors represented in total.
What is the education level in ZIP code 18101? ▼
In ZIP code 18101, 56.8% of residents aged 25+ have a high school diploma or higher, and 23.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 18101? ▼
The mean commute time for workers in ZIP code 18101 is 28.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 18101? ▼
In ZIP code 18101, approximately 8.3% of occupied housing units are owner-occupied and 91.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 18101? ▼
The poverty rate in ZIP code 18101 is 22.8% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.