% of adults in the Chicago metro area who are ages…
Chart
Table
Share
Religious tradition
18-29
30-49
50-64
65+
Sample size
Catholic
18%
36%
29%
17%
269
Evangelical Protestant
12%
38%
29%
21%
130
Mainline Protestant
22%
26%
31%
21%
120
Unaffiliated (religious "nones")
32%
44%
16%
7%
168
Sample sizes and margins of error vary from subgroup to subgroup, from year to year and from state to state. You can see the sample size for the estimates in this chart on rollover or in the last column of the table. And visit this table to see approximate margins of error for a group of a given size. Readers should always bear in mind the approximate margin of error for the group they are examining when making comparisons with other groups or assessing the significance of trends over time. For full question wording, see the survey questionnaire.