St. Marys, Iowa Population & Demographics

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%

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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).