Population 49,293 · Census ACS 2020–24
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Population and households in ZIP 18104
Household size in ZIP 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.37 | 2.55 | 2.51 | 2.68 |
| 2010–14 | 2.39 | 2.60 | 2.53 | 2.73 |
| 2015–19 | 2.44 | 2.57 | 2.50 | 2.71 |
| 2020–24 | 2.52 | 2.56 | 2.46 | 2.65 |
| Change | +0.15 | +0.01 | −0.05 | −0.03 |
The average household in ZIP 18104 has 2.52 people, a bit under the U.S. average of 2.65. Household size has climbed from 2.37 in 2006–10, even as the national average fell. Households are largest in the north and smallest in the east.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 43.4 | 40.7 | 40.3 | 37.7 |
| 2010–14 | 44.1 | 41.6 | 41.0 | 38.6 |
| 2015–19 | 41.5 | 42.3 | 41.8 | 39.6 |
| 2020–24 | 42.8 | 42.3 | 42.0 | 40.1 |
| Change | −0.7 | +1.6 | +1.7 | +2.3 |
ZIP 18104 skews a little older than the country: its median age is 42.8, against 40.1 nationally. Since 2006–10, the median age has edged down from 43.4, even as the national median rose. The youngest areas are in the northeast, the oldest in the southeast.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 7.2% | 10.8% | 10.5% | 12.3% |
| 2010–14 | 7.4% | 11.0% | 10.6% | 12.3% |
| 2015–19 | 11.6% | 11.4% | 10.5% | 11.6% |
| 2020–24 | 8.1% | 11.5% | 10.7% | 11.6% |
| Change | +0.9 pts | +0.7 pts | +0.2 pts | −0.6 pts |
Single parents head only 8.1% of households in ZIP 18104, well below the national share of 11.6%. Since 2006–10, the single-parent share has edged up 0.9 points, even as the national share fell.
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 18104
Renters in ZIP 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 25.0% | 26.9% | 29.0% | 33.3% |
| 2010–14 | 25.8% | 29.3% | 30.5% | 35.6% |
| 2015–19 | 30.8% | 31.2% | 31.1% | 36.0% |
| 2020–24 | 28.9% | 30.3% | 30.7% | 34.8% |
| Change | +3.9 pts | +3.4 pts | +1.7 pts | +1.5 pts |
Nearly three in ten households in ZIP 18104 rent their homes (28.9%), a little below the national share of 34.8%; the rest own. Among homeowners, 37.4% have no mortgage at all, about the same as nationally. Rentals cluster in the east; owners are most common in the northwest. Since 2006–10, the renter share has risen 3.9 points, mirroring the country.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 4.7% | 8.0% | 10.3% | 11.4% |
| 2010–14 | 8.6% | 8.6% | 10.5% | 11.4% |
| 2015–19 | 6.3% | 8.3% | 10.7% | 11.1% |
| 2020–24 | 4.2% | 6.5% | 9.1% | 9.6% |
| Change | −0.4 pts | −1.5 pts | −1.2 pts | −1.8 pts |
Only 4.2% of homes in ZIP 18104 are vacant, far below the national rate of 9.6%, which usually means strong demand for housing. ZIP 18104 has a lower vacancy rate than at least four in five Pennsylvania ZIP codes.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 1968 | 1965 | 1963 | 1974 |
| 2010–14 | 1968 | 1967 | 1964 | 1975 |
| 2015–19 | 1970 | 1967 | 1965 | 1977 |
| 2020–24 | 1974 | 1969 | 1967 | 1980 |
| Change | +6 | +3 | +4 | +6 |
Housing in ZIP 18104 leans older: the median home dates to 1974, against 1980 nationally. Still, homes here are newer than in the wider Allentown area, where the median home dates to 1969. The median year built has moved up from 1968 in 2006–10, a sign of steady new building. Newer construction is concentrated in the southwest, while the east has the oldest housing.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | $1,046 | $928 | $829 | $965 |
| 2010–14 | $1,092 | $1,020 | $923 | $1,040 |
| 2015–19 | $1,355 | $1,170 | $1,039 | $1,213 |
| 2020–24 | $1,750 | $1,504 | $1,323 | $1,571 |
| Change | +$705 | +$576 | +$494 | +$606 |
Rent in ZIP 18104 runs $1,750 a month at the median, utilities included, above the U.S. median of $1,571. Rents are up $705 a month from 2006–10, a 67% jump, faster than rents rose nationally. Rent takes 31.1% of the typical renter's income, just over the 30% mark often used to define affordable rent. Renters on a budget will find the lowest rents in the east; the highest are in the northwest.
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 18104
Bachelor's degrees in ZIP 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 38.7% | 26.0% | 27.2% | 28.4% |
| 2010–14 | 39.2% | 26.7% | 28.7% | 29.6% |
| 2015–19 | 41.6% | 29.5% | 31.8% | 32.1% |
| 2020–24 | 48.8% | 33.3% | 35.6% | 35.6% |
| Change | +10.1 pts | +7.3 pts | +8.3 pts | +7.2 pts |
ZIP 18104 is highly educated: about half of adults 25 and older (48.8%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree is up 10.1 points from 2006–10, as it has nationally. College graduates are most concentrated in the west and least in the north.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 90.8% | 86.4% | 87.3% | 84.9% |
| 2010–14 | 92.1% | 88.0% | 88.8% | 86.1% |
| 2015–19 | 92.5% | 89.7% | 90.3% | 87.7% |
| 2020–24 | 94.4% | 91.4% | 91.8% | 89.3% |
| Change | +3.6 pts | +5.0 pts | +4.5 pts | +4.3 pts |
High school completion is high in ZIP 18104: 94.4% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma has risen 3.6 points since 2006–10, as it has nationally.
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 18104
| Period | ZIP 18104 | Allentown area | Pennsylvania | U.S. |
|---|---|---|---|---|
| 2006–10 | 5.4% | 7.3% | 7.5% | 8.1% |
| 2010–14 | 8.0% | 9.4% | 8.8% | 9.4% |
| 2015–19 | 4.4% | 5.5% | 5.5% | 5.6% |
| 2020–24 | 5.9% | 5.5% | 5.4% | 5.4% |
| Change | +0.5 pts | −1.8 pts | −2.1 pts | −2.7 pts |
Unemployment in ZIP 18104 is close to the national rate: 5.9% of the labor force, against 5.4%. Since 2006–10, unemployment has edged up 0.5 points, even as the national rate fell. 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 18104 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 18104 | 2.52 | 42.8 | 8.1% | 28.9% | 4.2% | 1974 | $1,750 | 48.8% | 94.4% | 5.9% |
| ZIP 18102 | 3.02 | 32.2 | 27.2% | 67.9% | 9.6% | 1942 | $1,305 | 12.8% | 75.8% | 11.3% |
| ZIP 18106 | 2.56 | 45.7 | 9.3% | 10.6% | 3.5% | 1989 | $1,542 | 49.5% | 93.5% | 5.7% |
| ZIP 18101 | 2.17 | 29.5 | 16.1% | 90.4% | 6.8% | 1978 | $1,447 | 31.4% | 87.3% | 7.2% |
| ZIP 18103 | 2.60 | 40.2 | 17.3% | 38.1% | 5.6% | 1965 | $1,458 | 25.3% | 86.0% | 5.7% |
| ZIP 18046 | 2.73 | 39.2 | 11.8% | 9.1% | 4.3% | 1985 | $1,548 | 55.5% | 96.6% | 5.9% |
| ZIP 18052 | 2.53 | 41.2 | 10.9% | 37.4% | 4.7% | 1968 | $1,442 | 26.0% | 92.0% | 7.3% |
| ZIP 18069 | 2.65 | 46.3 | 7.4% | 11.3% | 2.9% | 1988 | $1,654 | 51.0% | 96.4% | 4.3% |
| ZIP 18087 | 2.29 | 46.5 | 8.1% | 49.7% | 7.4% | 1995 | $1,728 | 44.8% | 94.6% | 0.8% |
| ZIP 18049 | 2.47 | 43.3 | 8.2% | 28.2% | 2.7% | 1965 | $1,430 | 38.6% | 94.8% | 3.0% |
| ZIP 18032 | 2.40 | 39.7 | 11.5% | 25.1% | 2.6% | 1947 | $1,065 | 28.2% | 93.6% | 5.9% |
All figures 2020–24.
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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 18104. 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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