People in Marble Rock, Iowa
Cost of Living,
The 2012 Marble Rock, IA, population is 307. There are 370 people per square mile (population density).
Family in Marble Rock, IA
The median age is 46.9. The US median is 37.3. 61.94% of people in Marble Rock, IA, are married. 8.70% are divorced.
The average household size is 2.47 people. 27.38% of people are married, with children. 8.33% have children, but are single.
Race in Marble Rock, IA
99.02% of people are white, 0.00% are black, 0.33% are asian, 0.00% are native american, and 0.65% claim 'Other'.
0.75% of the people in Marble Rock, IA, claim hispanic ethnicity (meaning 99.25% are non-hispanic).
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