Parker is a city in southeastern Fremont County, Idaho, United States.

According to the United States Census Bureau, the city has a total area of 0.35 square miles (0.91 km2), all of it land.

There were 107 housing units at an average density of 305.7 per square mile (118.0/km2).

The racial makeup of the city was 94.8% White, 2.3% Native American, and 3.0% from other races.

20.2% of all households were made up of individuals, and 12.1% had someone living alone who was 65 years of age or older.

22.9% of all households were made up of individuals, and 13.5% had someone living alone who was 65 years of age or older.