Chicago did not possess a specific religious past before 1830. Later, protestant missionaries migrated and by the year 1890, most of the population in the particular area were converted to Protestantism. Thirty six percent of the population got affiliation with evangelical denominations.

By 2000, it was found that the largest religious institution in the Chicago and the rest of Illinois is Roman Catholic Church with having about 1225 congregations. The protestant denomination was 365 182 and Jewish denomination is 270, 000. Over forty four percent of the population are not members of any particular religion.

http://jaar.oxfordjournals.org/cgi/pdf_extract/LXIV/4/733

There are plenty of voluntary programs mentioned in zoo every season, if there are any searching for the voluntary opportunities in zoo then here is the golden chance for you.

The voluntary program mentioned by the zoo committee will be only for this season. The work will be four hour shift every week. It will be either morning or afternoon. It can also be any particular day the applied person chooses. This is all it need for the applicant.

The application for the volunteer opportunities in volunteer programs of zoo in Chicago, IL has been called. There are many other programs as well.

http://www.brookfieldzoo.org/czs/Support-the-Society/Volunteer.aspx