| Official Name: | County Line, Alabama |
| Settlement Type: | Town |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | Counties |
| Subdivision Name: | United States |
| Subdivision Name1: | Alabama |
| Subdivision Name2: | Blount, Jefferson |
| Leader Title: | Mayor |
| Leader Name: | Arthur E "Buddy" Self |
| Area Total Sq Mi: | 0.96 |
| Area Land Sq Mi: | 0.96 |
| Area Water Sq Mi: | 0.00 |
| Elevation Ft: | 554 |
| Population As Of: | 2020 |
| Population Total: | 311 |
| Population Density Sq Mi: | 325.31 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Coordinates: | 33.8194°N -86.7292°W |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Area Code: | 205 & 659 |
| Blank Name: | FIPS code |
| Blank Info: | 01-17968 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0116712 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 2.48 |
| Area Land Km2: | 2.48 |
| Area Water Km2: | 0.00 |
| Population Density Km2: | 125.62 |
County Line is a town in Blount and Jefferson counties in the State of Alabama. At the 2020 census, the population was 311.
County Line is located at 33°49'10.722" north, 86°43'45.433" west (33.819645, -86.729287),[2] east of Trafford.
According to the United States Census Bureau, the town has a total area of 0.9sqmi, all land.[3]
At the 2000 census, there were 257 people, 97 households, and 73 families in the town. The population density was 270.5sp=usNaNsp=us. There were 106 housing units at an average density of 111.6sp=usNaNsp=us. The racial makeup of the town was 95.72% White, 2.72% Black or African American, and 1.56% from two or more races. 1.17% of the population were Hispanic or Latino of any race.
Of the 97 households 40.2% had children under the age of 18 living with them, 57.7% were married couples living together, 11.3% had a female householder with no husband present, and 24.7% were non-families. 23.7% of households were one person and 7.2% were one person aged 65 or older. The average household size was 2.65 and the average family size was 3.12.
The age distribution was 26.5% under the age of 18, 12.1% from 18 to 24, 31.1% from 25 to 44, 19.8% from 45 to 64, and 10.5% 65 or older. The median age was 33 years. For every 100 females, there were 114.2 males. For every 100 females age 18 and over, there were 110.0 males.
The median household income was $35,625 and the median family income was $37,500. Males had a median income of $28,500 versus $21,250 for females. The per capita income for the town was $13,621. About 13.8% of families and 17.4% of the population were below the poverty line, including 30.4% of those under the age of eighteen and 9.1% of those sixty five or over.
County Line incorporated on August 27, 1957, as a town.
The town's government consists of a mayor and five city council members. As of December 2023, the mayor was Arthur E. "Buddy" Self.[4]