PlainZIP

Portland, PA · standard

ZIP Code 18351

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

518
543/sq mi
$52,679
Median income
$266,900
Median home value
18.8%
Bachelor's or higher

The verdict

Portland pairs one of the lowest household incomes in the country with above-median home values, in a low-density, mixed-tenure area.

18th pct
household income, US ZIPs
Top 39%
home value, US ZIPs
543
people per sq mi
54%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 18351 against every reporting US ZIP.

ZIP code 18351 is a sparsely populated ZIP (a standard USPS delivery area) in Portland, Northampton County, Pennsylvania, home to just 518 residents across 1.0 square miles, a density of 543 people per square mile, in the New York time zone.

ZIP 18351 reports a modest median household income of $52,679 (32% below the Pennsylvania average), while per-capita income is $30,981. 20.0% of residents live below the poverty line, and the unemployment rate reads 4.0%. Median home value sits at $266,900 (17% above the state average), median rent at $1,217 a month, and owner-occupancy at 54.0%.

Educational attainment sits below the national norm: 18.8% of adults hold a bachelor's degree or higher, the median age is 46.4, and the average commute is -. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Northampton County, so you can benchmark 18351 against its immediate geography rather than a 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 18351

Top 5 sectors by establishment count in Portland, PA

Which industries have the most business establishments in ZIP 18351.

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 18351, Portland, 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

518

Population

1.0

Area (sq mi)

543

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 18351?

46.4

Median Age

49.3%

Male

50.7%

Female

8.8%

Foreign-Born

White 94.1%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 3.1%
Hispanic or Latino 1.5%

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?

$52,679

Median Household Income

-32% vs state

$30,981

Per Capita Income

20.0%

Poverty Rate

4.0%

Unemployment Rate

How ZIP 18351 ranks nationally

Portland, PA household income vs. every US ZIP code

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

$52,679 18th percentile higher than 18% 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 64.0%
Bachelor's Degree or Higher 18.8%

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

What does housing look like?

289

Total Housing Units

235

Occupied Units

54

Vacant Units

2.32

Avg Household Size

Occupancy Type

Owner 54.0%
Renter 46.0%

$266,900

Median Home Value

+17% vs state

$1,217

Median Rent

1938

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 16 business establishments in ZIP 18351, employing approximately 217 people with a combined annual payroll of $11,308,000.

16

Businesses

217

Employees

$11.3M

Annual Payroll

3

Industry Sectors

Industry Establishments % of Total
Construction 3 18.8%
Manufacturing 3 18.8%
Accommodation and food services 3 18.8%

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 18351 vs 18343 →

ZIP 18351 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 18351 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 18351 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 18351 ranks #9 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
18343 Mount Bethel, PA 3,982 1.9 mi
07833 Delaware, NJ 157 2.7 mi
07832 Columbia, NJ 3,903 3.4 mi
18327 Delaware Water Gap, PA 700 4.1 mi
18356 Shawnee On Delaware, PA 136 6.2 mi
18013 Bangor, PA 17,802 6.1 mi
18335 Marshalls Creek, PA 672 9.9 mi
07823 Belvidere, NJ 7,571 7.3 mi
18301 East Stroudsburg, PA 28,561 8.6 mi
07825 Blairstown, NJ 9,555 8.2 mi

More ZIP Codes in Northampton County

18042 standard
Easton, PA
Pop: 41,570
18017 standard
Bethlehem, PA
Pop: 37,549
18015 standard
Bethlehem, PA
Pop: 32,832
18045 standard
Easton, PA
Pop: 26,391
18064 standard
Nazareth, PA
Pop: 24,073
18020 standard
Bethlehem, PA
Pop: 20,447

Related Areas

Northampton County Portland, PA Pennsylvania

Frequently Asked Questions

What county is ZIP code 18351 in? ▼
ZIP code 18351 (Portland) is located in Northampton County, Pennsylvania. Northampton County contains multiple ZIP codes, see the full list at /counties/northampton-pa.
What is the population of ZIP code 18351? ▼
ZIP code 18351 in Portland, PA has a population of 518 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 18351? ▼
The median household income in ZIP 18351 is $52,679, which is 31% below the national average of $76,288.
What is the average home value in ZIP 18351? ▼
The median home value in ZIP 18351 is $266,900, which is 4% below the national average of $278,155.
What is the demographic makeup of ZIP 18351? ▼
The largest racial group in ZIP 18351 is White at 94.1%. Hispanic or Latino residents make up 1.5% of the population.
How many businesses are in ZIP code 18351? ▼
ZIP code 18351 has 16 business establishments employing approximately 217 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 18351? ▼
The top industries by establishment count in ZIP 18351 are: Construction (3), Manufacturing (3), Accommodation and food services (3). There are 3 industry sectors represented in total.
What is the education level in ZIP code 18351? ▼
In ZIP code 18351, 64.0% of residents aged 25+ have a high school diploma or higher, and 18.8% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 18351? ▼
In ZIP code 18351, approximately 54.0% of occupied housing units are owner-occupied and 46.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 18351? ▼
The poverty rate in ZIP code 18351 is 20.0% 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.