Mountain Park is a city primarily in the western part of northern Fulton County in the U.S. state of Georgia, with a small portion extending less than 1,000 feet (300 m) into southeastern Cherokee County. As of the 2020 U.S. census, the city had a total population of 583.
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.3 km2), of which 0.1 square miles (0.26 km2), or 12.96%, is water.
Mountain Park is bordered on three sides by Roswell, and on the west by an unincorporated area of Cherokee County; although the city extends into Cherokee County, the large majority of the city is located in Fulton County.[5]
Lake Garrett is within the city, and downstream to the northwest Lake Cherful straddles the county line.[6] Both lakes are gradually being destroyed by siltation, caused by development upstream in Roswell. The city sued in 2005. The developers contested their liability and claim the lakes have likely out-lived their "life expectancy", and the situation is likely caused by the natural flow of silt and sediment in the basin. Due to numerous pre-trial motions, the case did not go to court until October 2010, when the jury ruled in favor of Mountain Park but only awarded $45,000 in damages.[7]
As of the 2020 United States census, there were 583 people, 273 households, and 171 families residing in the city.
In 2000, the median income for a household in the city was $55,875, and the median income for a family was $61,875. Males had a median income of $42,500 versus $35,769 for females. The per capita income for the city was $31,085. About 2.6% of families and 3.8% of the population were below the poverty line, including 3.0% of those under age 18 and 4.2% of those age 65 or over.