ZIP Code 73743
About Hillsdale
Hillsdale is a town in Garfield County, Oklahoma, United States. The population was 75 at the 2020 decennial census.
From Wikipedia — text licensed CC BY-SA 4.0.
Area Profile
US Census (ACS 5-year · Gazetteer)
77
population
222
people / sq mi
48.4
median age
51
housing units
35
households
0.3
land area (sq mi)