Joliet Has Most, Naperville Has Least Sex Offenders Per Capita

Last week, Patch sites around Chicago posted a sex offender registry map.

We looked that data of towns surrounding Montgomery and found the percentage of sex offenders per town by dividing the number of sex offenders listed on the Illinois Sexual Offender website by a town's population. While last week you saw just the number of sex offenders, we hope this provides context as to how many live where.  

The registry list includes those in a Department of Corrections facility, those who are homeless and those whose location may be unknown. 

The populations in the chart are from the U.S. Census Bureau, 2011. 

READ MORE: 

• Sex Offender Watch: A Map of Montgomery Homes to Keep on Your Radar this Halloween

Town

Sex Offenders

Population

Percentage

Joliet

209

148,402

0.1408337

Lockport

34

24,987

0.1360708

Aurora

212

199,672

0.1061741

Wheaton

52

53,238

0.0976746

Warrenville

12

13,232

0.0906892

LaGrange

12

15,617

0.0768393

Plainfield

30

39,840

0.0753012

Bolingbrook

55

73,802

0.0745237

North Aurora

12

16,922

0.0709136

Lisle

13

22,539

0.0576778

Montgomery

10

18,688

0.0535102

Lemont

8

16,076

0.0497636

Oak Lawn

28

56,937

0.0491772

Darien

10

22,241

0.044962

Woodridge

14

33,200

0.0421687

Oswego

12

30,856

0.0388903

Downers Grove

17

48,163

0.0352968

Palos Hills

6

17,561

0.0341666

Tinley Park

17

56,965

0.0298429

Orland Park

14

57,016

0.0245545

Palos Heights

3

12,567

0.023872

Naperville

32

142,773

0.0224132

Who Needs to Register?

Persons convicted of misdemeanor or felony sex crimes involving children under age 18 as well as adult victims are required to register their addresses with the local law enforcement agency in the communities where they reside once a year, under the Illinois Sex Offender Registration Act. The same rules apply to out-of-state sex offenders who move to or work in Illinois, as well as out-of-state students attending a state college or university.

The Illinois State Police maintain a detailed Sex Offender Registry of all of the state's registered sex offenders that is available to the public. There, citizens can look up and find the registered sex offenders living in their own communities. Local police departments throughout the state feed information about the individual sex offenders registered in their jurisdictions to the state database.

Similar requirements for registration are also in effect for sex crimes committed against adults — especially adults with disabilities.

A sex offender must register annually in person at the local police department for the duration of the required 10-year registration period. 

In addition, registered sex offenders are prohibited from residing within 500 feet of a school, daycare center, youth center or other facility catering to children under age 18.