Population (year 2000): 213
Males: 112 (52.6%), Females: 101 (47.4%)
Elevation: 2181 feet
County: Buffalo
Land area: 0.3 square miles
Zip code: 68870
Median resident age: 36.5 years
Median household income: $44,375 (year 2000)
Median house value: $67,100 (year 2000)
Races in Riverdale: White Non-Hispanic (99.5%)
Ancestries: German (58.7%), Irish (16.0%), English (15.0%), Swedish (13.1%), Russian (9.4%), Danish (7.5%).