ZIP Code Tabulation Area · Pennsylvania

ZIP Code 18040: Northampton County, PA

ZIP Code 18040 (Northampton County, Pennsylvania) has an estimated 17,256 residents in 6,668 households. The median household income is $107,016, the median home value is $360,800 and the median gross rent is $1,397/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Some estimates have a large margin of error. One figure for this ZIP (gross rent) is marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

17,256

Margin of error ±296

Median household income

$107,016

Margin of error ±$9,684

Median home value

$360,800

Margin of error ±$15,555

Median gross rent

$1,397/mo*

Margin of error ±$803· estimate has a large margin of error

Median age

45.2 yrs

Margin of error ±2.7 yrs

Mean travel time to work

30.5 min

Margin of error ±4.9 min

How ZIP 18040 compares with Pennsylvania and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 1804045.2 yrsPennsylvania40.9 yrsUnited States38.9 yrs

Median household income

ZIP 18040$107,016Pennsylvania$77,971United States$80,734

Per capita income

ZIP 18040$53,330Pennsylvania$44,355United States$44,673

Poverty rate

ZIP 180404.8%Pennsylvania11.7%United States12.5%

Unemployment rate

ZIP 180403.2%Pennsylvania5.3%United States5.2%

Bachelor's degree or higher

ZIP 1804041.8%Pennsylvania35.2%United States35.7%

Median home value

ZIP 18040$360,800Pennsylvania$254,500United States$332,700

Median gross rent

ZIP 18040$1,397/mo*Pennsylvania$1,209/moUnited States$1,413/mo

Owner-occupied homes

ZIP 1804091.1%Pennsylvania69.3%United States65.2%

Mean travel time to work

ZIP 1804030.5 minPennsylvania26.3 minUnited States26.4 min

Worked from home

ZIP 1804017.1%Pennsylvania15.6%United States15.1%

All figures for ZIP 18040

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 18040 — ACS 2020–2024 5-year estimates
MeasureZIP 18040Margin of errorPennsylvaniaUnited States
Total population17,256±29613,018,639334,922,499
Median age45.2 yrs±2.7 yrs40.9 yrs38.9 yrs
Households6,668±3285,274,853129,227,496
Median household income$107,016±$9,684$77,971$80,734
Per capita income$53,330±$4,536$44,355$44,673
Poverty rate4.8%±2.0 pts11.7%12.5%
Unemployment rate3.2%±2.1 pts5.3%5.2%
Bachelor's degree or higher41.8%±4.9 pts35.2%35.7%
Median home value$360,800±$15,555$254,500$332,700
Median gross rent$1,397/mo*±$803$1,209/mo$1,413/mo
Owner-occupied homes91.1%±5.0 pts69.3%65.2%
Mean travel time to work30.5 min±4.9 min26.3 min26.4 min
Worked from home17.1%±3.9 pts15.6%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 18040
GroupZIP 18040PennsylvaniaUnited States
White alone, not Hispanic or Latino68.3%73.0%57.4%
Black or African American alone, not Hispanic or Latino8.4%10.3%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino7.6%3.8%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.0%0.5%0.6%
Two or more races, not Hispanic or Latino3.0%3.6%4.3%
Hispanic or Latino (of any race)12.8%8.7%19.3%

Where ZIP 18040 is

State
Pennsylvania
Main county
Northampton County
Largest overlapping place
Chestnut Hill (17% of the ZIP's land area)
Land area
17.28 sq mi· about 999 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Northampton County

18013 Northampton County, PA18014 Northampton County, PA18015 Bethlehem, PA18017 Bethlehem, PA18020 Middletown, PA18035 Cherryville, PA18038 Northampton County, PA18042 Northampton County, PA18045 Northampton County, PA18055 Northampton County, PA18063 Martins Creek, PA18064 Northampton County, PA18067 Northampton County, PA18072 Northampton County, PA18083 Stockertown, PA18085 Tatamy, PA18086 Northampton County, PA18088 Northampton County, PA18091 Northampton County, PA18343 Northampton County, PA18351 Portland, PA

See every ZIP code in Pennsylvania, or compare ZIP 18040 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.