Holtville (also Slapout) is a census-designated place and unincorporated community in Elmore County, Alabama, United States. Its population was 4,940 as of the 2020 census.

Holtville/Slapout is located on the western bank of Jordan Lake, and much of its population lives along this lakeshore, or in the neighboring Lightwood community.

According to tradition, the old name of Slapout was derived from a storekeeper's way of stating an item was out of stock: he was "slap out of it".

As of the 2020 US Census, Holtville/Slapout, AL had a population of 4940 residents.

Historical population

Census	Pop.	Note	%±
2020	4,940		—
U.S. Decennial Census

Holtville/Slapout is in the Elmore County Public School System, served by Holtville Elementary, Middle, and High Schools with a combined enrollment of 1947 students in 2023.

• Jessica Meuse, contestant on the thirteenth season of American Idol.
• Randy Nix, a Republican member of the Georgia House of Representatives for the 69th district.
• Kirby Smart, Head football coach, University of Georgia.

Holtville was the subject of a 1945 film by The United States Information Agency that highlighted how a rural community can overcome poverty and poor soil through education and commitment.".

• Slapout, Oklahoma