40203, KY Demographics

Population 17,526 · Census ACS 2020–24

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40203, KY map of median age by neighborhood
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Population and households in ZIP 40203

Household size in ZIP 40203

Household size, people per household
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–102.152.512.512.68
2010–142.092.552.532.73
2015–192.102.552.522.71
2020–242.012.502.512.65
Change−0.14−0.01−0.00−0.03
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ZIP 40203 is a place of small households, averaging 2.01 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Household size has dropped from 2.15 in 2006–10, a much bigger shift than nationally. Of the 203 Kentucky ZIP codes with 5,000+ people, only four have smaller households.

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 40203

Median age, years
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1037.438.538.537.7
2010–1437.539.439.338.6
2015–1938.540.040.039.6
2020–2434.140.239.940.1
Change−3.3+1.7+1.5+2.3
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With a median age of just 34.1, ZIP 40203 is far younger than the country as a whole (40.1), a population that tilts toward young adults, many of them living alone or as couples. Since 2006–10, the median age has dropped from 37.4, even as the national median rose. Of the 203 Kentucky ZIP codes with 5,000+ people, only 11 are younger.

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 40203

Single-parent households, % of households
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1024.2%12.6%11.7%12.3%
2010–1419.5%12.6%11.9%12.3%
2015–1920.5%11.6%11.8%11.6%
2020–2422.7%12.4%11.9%11.6%
Change−1.5 pts−0.2 pts+0.2 pts−0.6 pts
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Single parents head more than one in five households in ZIP 40203 (22.7%), well above the national share of 11.6%. The single-parent share has fallen 1.5 points since 2006–10, mirroring the country. Of the 203 Kentucky ZIP codes with 5,000+ people, only four have a higher share of single-parent households.

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 40203

Renters in ZIP 40203

Renters, % of occupied homes
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1081.8%30.5%30.1%33.3%
2010–1486.2%32.3%32.3%35.6%
2015–1981.2%32.5%32.8%36.0%
2020–2475.9%31.1%31.7%34.8%
Change−5.9 pts+0.6 pts+1.5 pts+1.5 pts
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Most households in ZIP 40203 rent: 75.9% 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 four in ten owners (41.1%) have paid off their mortgages, about the same as nationally. Since 2006–10, the renter share has fallen 5.9 points, even as the national share rose.

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 40203

Vacant homes, % of all homes
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1023.4%9.8%12.2%11.4%
2010–1419.4%9.8%11.9%11.4%
2015–1920.4%9.8%12.3%11.1%
2020–2418.3%7.9%10.6%9.6%
Change−5.1 pts−1.9 pts−1.6 pts−1.8 pts
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Vacant homes make up 18.3% of the housing in ZIP 40203, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy is down 5.1 points from 2006–10, in line with the national trend.

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 40203

Age of homes, median year built
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–101949197519771974
2010–141946197619791975
2015–191955197619801977
2020–241961198019821980
Change+12+5+5+6
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The housing in ZIP 40203 is old by national standards: the median home dates to 1961, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. The median year built has moved up from 1949 in 2006–10, a sign of steady new building. Of the 203 Kentucky ZIP codes with 5,000+ people, only 17 have older homes.

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 40203

Rent, per month
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–10$500$769$657$965
2010–14$568$826$728$1,040
2015–19$624$928$814$1,213
2020–24$946$1,200$1,024$1,571
Change+$446+$431+$367+$606
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Rent in ZIP 40203 runs $946 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $446 a month from 2006–10, an 89% jump, faster than rents rose nationally. The typical renter here spends 33.6% of household income on rent, well over the 30% mark often used to define affordable rent, so many renters here are stretched. Renters on a budget will find the lowest rents in the south; 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 40203

Bachelor's degrees in ZIP 40203

Bachelor's degrees, % of adults 25+
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1014.3%24.9%21.3%28.4%
2010–1416.3%26.7%22.5%29.6%
2015–1919.3%29.0%24.5%32.1%
2020–2423.6%32.8%27.6%35.6%
Change+9.3 pts+7.9 pts+6.2 pts+7.2 pts
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Fewer adults in ZIP 40203 have a four-year degree than in the country as a whole: 23.6%, against 35.6% nationally. The share with a degree is up 9.3 points from 2006–10, mirroring the country.

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 40203

High school graduates, % of adults 25+
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1072.8%86.4%81.7%84.9%
2010–1474.8%87.8%83.9%86.1%
2015–1983.2%90.1%86.4%87.7%
2020–2486.5%91.1%88.8%89.3%
Change+13.7 pts+4.7 pts+7.2 pts+4.3 pts
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Nearly one in seven adults in ZIP 40203 never finished high school, a bit more than nationally: 86.5% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma is up 13.7 points from 2006–10, a much bigger shift than 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 40203

Unemployment, % of the labor force
PeriodZIP 40203Louisville areaKentuckyU.S.
2006–1021.6%8.4%8.4%8.1%
2010–1421.3%9.1%9.5%9.4%
2015–1914.1%5.2%5.8%5.6%
2020–2412.6%4.8%5.1%5.4%
Change−9.0 pts−3.6 pts−3.3 pts−2.7 pts
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Finding work has been harder in ZIP 40203: 12.6% of the labor force was out of work and looking, well above the national rate of 5.4%. Only three of the 203 Kentucky ZIP codes with 5,000+ people have higher unemployment. Unemployment is down 9.0 points from 2006–10, a much bigger shift than nationally.

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 40203 compared with nearby ZIP codes

ZIP codeHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
ZIP 402032.0134.122.7%75.9%18.3%1961$94623.6%86.5%12.6%
ZIP 402021.4640.611.5%87.1%20.5%1974$93127.3%88.1%8.0%
ZIP 402082.1729.318.2%73.1%16.3%1952$1,02935.2%88.4%7.1%
ZIP 402102.5238.429.0%57.0%20.1%1947$8657.9%81.6%14.6%
ZIP 402041.7539.55.6%51.3%13.1%1946$1,22660.8%95.5%5.2%
ZIP 402171.8636.56.4%40.4%12.6%1949$1,27652.0%94.1%4.2%
ZIP 402112.4137.225.5%59.0%20.8%1954$95311.8%84.9%15.8%
ZIP 402122.4740.324.5%50.0%16.7%1942$1,05913.0%82.5%8.9%
ZIP 402061.9340.04.6%48.1%9.8%1957$1,19458.3%95.3%3.8%
ZIP 402091.7948.39.4%55.7%14.2%1955$1,17621.7%74.9%14.2%
ZIP 402152.5036.721.9%57.8%11.8%1956$1,08614.0%77.5%11.6%

All figures 2020–24.

Zip codes with similar populations: 01850, MA · 10549, NY · 77868, TX · 20816, MD · 16148, PA · 19512, PA · 46064, IN · 55371, MN · 54166, WI · 50323, IA

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 40203. 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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