| Official Name: | Spring Mill, Kentucky |
| Settlement Type: | City |
| Pushpin Map: | Kentucky#USA |
| Pushpin Label: | Spring Mill |
| Pushpin Map Caption: | Location within the state of Kentucky |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Kentucky |
| Subdivision Type2: | County |
| Subdivision Name2: | Jefferson |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.06 |
| Area Land Sq Mi: | 0.06 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 294 |
| Population Density Sq Mi: | 5250.00 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 650 |
| Coordinates: | 38.1436°N -85.6317°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 40228 |
| Blank Name: | FIPS code |
| Blank Info: | 21-72770 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2405507 |
| Area Total Km2: | 0.14 |
| Area Land Km2: | 0.14 |
| Area Water Km2: | 0.00 |
| Population Density Km2: | 2040.14 |
Spring Mill is a home rule-class city in Jefferson County, Kentucky, United States. The population was 287 at the 2010 census,[2] down from 380 at the 2000 census.
Spring Mill is located in southern Jefferson County and is southeast of downtown Louisville.
According to the United States Census Bureau, the city has a total area of 0.14km2, all land.[2]
At the 2000 census,[3] there were 380 people, 130 households and 121 families residing in the city. The population density was 6300.5sp=usNaNsp=us. There were 130 housing units at an average density of 2155.4sp=usNaNsp=us. The racial makeup of the city was 98.42% White, 0.53% Asian, and 1.05% from two or more races. Hispanic or Latino of any race were 1.32% of the population.
There were 130 households, of which 35.4% had children under the age of 18 living with them, 86.9% were married couples living together, 5.4% had a female householder with no husband present, and 6.9% were non-families. 6.2% of all households were made up of individuals, and 4.6% had someone living alone who was 65 years of age or older. The average household size was 2.92 and the average family size was 3.04.
25.8% of the population were under the age of 18, 5.8% from 18 to 24, 21.8% from 25 to 44, 33.9% from 45 to 64, and 12.6% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 100.0 males. For every 100 females age 18 and over, there were 89.3 males.
The median household income was $73,250 and the median family income was $72,750. Males had a median income of $50,625 and females $31,500. The per capita income was $29,849. None of the population or families were below the poverty line.