| Zip Code : | 40228 |
| City : | Hollow Creek city, Louisville/Jefferson County metro government (balance), Spring Mill city |
| County : | Jefferson County |
| State : | Kentucky (KY) |
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| Land Area : | 7.57 sq mi |
| Water Area : | 0.05 sq mi |
| Latitude : | 38.1340777 |
| Longitude : | -85.6262992 |
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| Population (2010): | 15,743 |
| Population Estimate (2012) : | 15,897 |
| Population Density : | 2,079.91/sq mi |
| Housing Units (2012) : | 6,492 |
| Median Household Income (2012) : | $57,338 (Kentucky : $42,610, USA : $53,046) |
| Median Family Income (2012) : | $70,212 (Kentucky : $53,833, USA : $64,585) |
| Median House Price (2012) : | $149,900 (Kentucky : $120,000, USA : $181,400) |