Lake Ellsworth Addition is a census-designated place (CDP) in Comanche County, Oklahoma, United States. It was first listed as a CDP prior to the 2020 census.^[2]

Lake Ellsworth Addition, Oklahoma
Census-designated place
Lake Ellsworth Addition Show map of Oklahoma Lake Ellsworth Addition Show map of the United States
Coordinates: 34°50′13″N 98°19′17″W / 34.83694°N 98.32139°W / 34.83694; -98.32139
Country	United States
State	Oklahoma
County	Comanche
Area [1]
• Total	0.25 sq mi (0.65 km2)
• Land	0.25 sq mi (0.65 km2)
• Water	0.00 sq mi (0.00 km2)
Elevation [2]	1,270 ft (390 m)
Population  (2020)
• Total	223
• Density	881.42/sq mi (340.90/km2)
Time zone	UTC-6 (Central (CST))
• Summer (DST)	UTC-5 (CDT)
ZIP Code	73006 (Apache)
Area code	580
FIPS code	40-40875
GNIS feature ID	2812848[2]

The CDP is in northern Comanche County, to the northeast of Lake Ellsworth, an impoundment on East Cache Creek, a south-flowing tributary of the Red River. It sits just north of the lake's Tony Creek inlet. It is 6 miles (10 km) southeast of Apache, 5 miles (8 km) west-northwest of Fletcher, and 5 miles (8 km) north of Elgin.