Population 4,910 · Census ACS 2020–24
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Population and households in ZIP 18101
Household size in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.60 | 2.55 | 2.51 | 2.68 |
| 2010–14 | 2.76 | 2.60 | 2.53 | 2.73 |
| 2015–19 | 2.61 | 2.57 | 2.50 | 2.71 |
| 2020–24 | 2.17 | 2.56 | 2.46 | 2.65 |
| Change | −0.44 | +0.01 | −0.05 | −0.03 |
Households in ZIP 18101 are small: just 2.17 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.60 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 29.1 | 40.7 | 40.3 | 37.7 |
| 2010–14 | 28.4 | 41.6 | 41.0 | 38.6 |
| 2015–19 | 34.5 | 42.3 | 41.8 | 39.6 |
| 2020–24 | 29.5 | 42.3 | 42.0 | 40.1 |
| Change | +0.4 | +1.6 | +1.7 | +2.3 |
ZIP 18101 is young: half of its residents are under 29.5, compared with a national median of 40.1. The population tilts toward young adults, many of them living alone or as couples.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 32.2% | 10.8% | 10.5% | 12.3% |
| 2010–14 | 33.9% | 11.0% | 10.6% | 12.3% |
| 2015–19 | 27.5% | 11.4% | 10.5% | 11.6% |
| 2020–24 | 16.1% | 11.5% | 10.7% | 11.6% |
| Change | −16.1 pts | +0.7 pts | +0.2 pts | −0.6 pts |
Single parents head about one in six households in ZIP 18101 (16.1%), well above the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in ZIP 18101
Renters in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 84.5% | 26.9% | 29.0% | 33.3% |
| 2010–14 | 87.1% | 29.3% | 30.5% | 35.6% |
| 2015–19 | 86.1% | 31.2% | 31.1% | 36.0% |
| 2020–24 | 90.4% | 30.3% | 30.7% | 34.8% |
| Change | +5.8 pts | +3.4 pts | +1.7 pts | +1.5 pts |
Most households in ZIP 18101 rent: 90.4% of occupied homes are rented, far above the national share of 34.8%. Expect more apartments, and more turnover, than in owner-heavy areas. About seven in ten owners (70.3%) have paid off their mortgages, well above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 21.7% | 8.0% | 10.3% | 11.4% |
| 2010–14 | 16.9% | 8.6% | 10.5% | 11.4% |
| 2015–19 | 15.0% | 8.3% | 10.7% | 11.1% |
| 2020–24 | 6.8% | 6.5% | 9.1% | 9.6% |
| Change | −14.8 pts | −1.5 pts | −1.2 pts | −1.8 pts |
Fewer homes sit empty in ZIP 18101 than nationally: 6.8%, against 9.6% for the U.S. That is in line with the rest of the Allentown area.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 1948 | 1965 | 1963 | 1974 |
| 2010–14 | 1942 | 1967 | 1964 | 1975 |
| 2015–19 | 1956 | 1967 | 1965 | 1977 |
| 2020–24 | 1978 | 1969 | 1967 | 1980 |
| Change | +31 | +3 | +4 | +6 |
The typical home in ZIP 18101 was built around 1978, about the same vintage as the country's housing overall (1980). Homes here are newer than in the Allentown area overall, where the median home dates to 1969.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | $715 | $928 | $829 | $965 |
| 2010–14 | $752 | $1,020 | $923 | $1,040 |
| 2015–19 | $953 | $1,170 | $1,039 | $1,213 |
| 2020–24 | $1,447 | $1,504 | $1,323 | $1,571 |
| Change | +$733 | +$576 | +$494 | +$606 |
Rent in ZIP 18101 runs $1,447 a month at the median, utilities included, below the U.S. median of $1,571. The picture is much the same across the Allentown area. Rent takes 34.6% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in ZIP 18101
Bachelor's degrees in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.9% | 26.0% | 27.2% | 28.4% |
| 2010–14 | 8.8% | 26.7% | 28.7% | 29.6% |
| 2015–19 | 11.0% | 29.5% | 31.8% | 32.1% |
| 2020–24 | 31.4% | 33.3% | 35.6% | 35.6% |
| Change | +24.5 pts | +7.3 pts | +8.3 pts | +7.2 pts |
Just over three in ten adults 25 and older in ZIP 18101 (31.4%) have a bachelor's degree or higher, a little below the national share of 35.6%. That is in line with the rest of the Allentown area.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 65.5% | 86.4% | 87.3% | 84.9% |
| 2010–14 | 66.4% | 88.0% | 88.8% | 86.1% |
| 2015–19 | 71.5% | 89.7% | 90.3% | 87.7% |
| 2020–24 | 87.3% | 91.4% | 91.8% | 89.3% |
| Change | +21.8 pts | +5.0 pts | +4.5 pts | +4.3 pts |
About one in eight adults in ZIP 18101 never finished high school, a bit more than nationally: 87.3% have a diploma or equivalent, against 89.3% across the U.S.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in ZIP 18101
| Period | ZIP 18101 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 20.5% | 7.3% | 7.5% | 8.1% |
| 2010–14 | 21.5% | 9.4% | 8.8% | 9.4% |
| 2015–19 | 10.2% | 5.5% | 5.5% | 5.6% |
| 2020–24 | 7.2% | 5.5% | 5.4% | 5.4% |
| Change | −13.3 pts | −1.8 pts | −2.1 pts | −2.7 pts |
Jobs have been harder to find in ZIP 18101 than nationally: unemployment was 7.2%, against 5.4%. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
ZIP 18101 compared with nearby ZIP codes
| ZIP code | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| ZIP 18101 | 2.17 | 29.5 | 16.1% | 90.4% | 6.8% | 1978 | $1,447 | 31.4% | 87.3% | 7.2% |
| ZIP 18102 | 3.02 | 32.2 | 27.2% | 67.9% | 9.6% | 1942 | $1,305 | 12.8% | 75.8% | 11.3% |
| ZIP 18103 | 2.60 | 40.2 | 17.3% | 38.1% | 5.6% | 1965 | $1,458 | 25.3% | 86.0% | 5.7% |
| ZIP 18109 | 2.67 | 36.9 | 16.9% | 47.4% | 7.6% | 1967 | $1,419 | 16.3% | 81.3% | 8.2% |
| ZIP 18052 | 2.53 | 41.2 | 10.9% | 37.4% | 4.7% | 1968 | $1,442 | 26.0% | 92.0% | 7.3% |
| ZIP 18104 | 2.52 | 42.8 | 8.1% | 28.9% | 4.2% | 1974 | $1,750 | 48.8% | 94.4% | 5.9% |
| ZIP 18032 | 2.40 | 39.7 | 11.5% | 25.1% | 2.6% | 1947 | $1,065 | 28.2% | 93.6% | 5.9% |
| ZIP 18018 | 2.28 | 40.0 | 9.8% | 47.0% | 4.2% | 1951 | $1,464 | 38.1% | 91.8% | 5.7% |
| ZIP 18015 | 2.60 | 34.7 | 12.7% | 49.9% | 8.1% | 1957 | $1,449 | 31.4% | 85.7% | 8.2% |
| ZIP 18049 | 2.47 | 43.3 | 8.2% | 28.2% | 2.7% | 1965 | $1,430 | 38.6% | 94.8% | 3.0% |
| ZIP 18034 | 2.79 | 40.9 | 7.0% | 9.9% | 4.9% | 1990 | $1,668 | 56.5% | 98.7% | 3.3% |
All figures 2020–24.
Zip codes with similar populations: 97918, OR · 02538, MA · 56368, MN · 49042, MI · 49245, MI · 49454, MI · 49779, MI · 49862, MI · 53530, WI · 53531, WI
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up ZIP 18101. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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