St. Marys, Iowa Population & Demographics

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Demographics Quick Facts

The population density in St. Marys is 2161% higher than Iowa
The median age in St. Marys is 46% higher than Iowa
In St. Marys 87.91% of the population is White
In St. Marys 2.20% of the population is Black
In St. Marys 0.00% of the population is Asian

Compare St. Marys, IA Demographics

St. Marys racial demographics

Race	St. Marys	Iowa	National
White	87.91%	90.90%	73.35%
Black	2.20%	3.32%	12.63%
Asian	0.00%	2.14%	5.22%
American Indian	5.49%	0.32%	0.82%
Native Hawaiian	1.10%	0.08%	0.18%
Mixed race	3.30%	1.97%	3.06%
Other race	0.00%	1.27%	4.75%

In St. Marys, 1.6% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

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Household income distribution

Place of birth by citizenship

St. Marys age breakdown

Marital status

Age of children in married couples

Source: The St. Marys, IA demographics data displayed above is derived from the United States Census Bureau American Community Survey (ACS).

Statistic	St. Marys	Iowa	National
Population	182	3,155,070	328,239,523
Population density (sq mi)	1,289	57	91
Median age	55.5	38.0	37.7
Male/Female ratio	0.7:1	1.0:1	1.0:1
Married (15yrs & older)	76%	60%	55%
Families w/ Kids under 18	22%	44%	43%
Speak English	100%	92%	79%
Speak Spanish	0%	4%	13%