CHICAGO (CBS) — Naperville and three other western suburbs led the Chicago area in drunken driving arrests last year.

As WBBM Newsradio’s Bob Roberts reports, statistics compiled by the Alliance Against Intoxicated Motorists showed that Naperville officers arrested 622 motorists on DUI charges last year, second only to Rockford, which had 686.

LISTEN: WBBM Newsradio’s Bob Roberts reports

Elmhurst, Elgin and Carol Stream ranked six through eight in total arrests statewide, with 367, 352 and 349, respectively.

Itasca had the highest average of arrests — 11.48 for each of its 23 sworn officers. That more than doubled second-place Carol Stream, whose officers averaged 5.63 DUI arrests.

Itasca had the second-biggest boost in arrests year-to-year statewide, from 182 to 264, an increase of 45.1 percent. The St. Louis suburb of Fairview Heights had a 141.7 percent increase.

Chicago was not part of the statewide statistics; the city is in its own class.

But Chicago Police officers ranked second, third and sixth statewide among individual arrests; Town Hall District Officer Timothy Walter’s 174 DUI-related arrests ranked second only to Rockford Police Investigator Rosemary Mathews, who had 181.