Rogru.com's analysis of Illinois counties & cities showed a wide range of car insurance rates. Our below compilation shows the top 20 cheapest Illinois counties & cities.

Rogru.com's Top 20 Cheapest Illinois Counties for Car Insurance
1. Cook County: $950
2. Kane County: $1020
3. McHenry County: $1030
4. Kendall County: $1050
5. Will County: $1060
6. Monroe County: $1270
7. Grundy County: $1350
8. DeKalb County: $1400
9. Boone County: $1500
10. McLean County: $1560
11. Woodford County: $1560
12. Ogle County: $1590
13. Champaign County: $1610
14. Kankakee County: $1610
15. Jo Daviess County: $1670
16. Marshall County: $1720
17. Iroquois County: $1720
18. Hamilton County: $1720
19. Schuyler County: $1720
20. Hancock County: $1720

Rogru.com's Top 20 Cheapest Illinois Cities for Car Insurance
1. Elk Grove: $800
2. Richmond: $810
3. Erienna: $820
4. Normal: $824
5. Old Town: $830
6. Dale: $830
7. Grandwood Park: $840
8. Quincy: $844
9. Grafton: $860
10. Radnor: $860
11. Galesburg: $865
12. Urbana: $867
13. Champaign: $869
14. East Galena: $870
15. Pierce: $870
16. Tuscola: $878
17. Rantoul: $878
18. Moline: $880
19. Kendall: $880
20. Geneva: $883

Car Insurance varies based on the vehicle you drive as well. Here is an example for Honda Insurance rates fromWheeling (http://www.rogru.com/wheeling-car-insurance-illinois-il11266) in Illinois.

Wheeling rates for Honda Fit models such as Sport & Fit are roughly $897 to $885 compared to Honda Civic (-$130) Honda CR-Z (-$100) & Honda Odyssey (+$80).

Honda Accord models such as LX & EX cost roughly $850 to $955 in Wheeling. A 2011 Honda Accord EX 2 Door Coupe 2.4L's insurance costs in Wheeling is $940 while nearby places such as Lake Zurich is costlier by $330 whereas Lombard, Long Grove, Park Ridge and Proviso are cheaper by $270, $230, $160 and $120 respectively.

Beyond the car vehicle insurance, each auto insurance quote is specific to you. Here is a case study comparing two different individuals fromGrafton (http://www.rogru.com/grafton-car-insurance-illinois-il36708) in Illinois.

Each auto insurance quote is distinct to you. To illustrate, a 84 year senior with Post DUI driving a 2006 Dodge Grand Caravan purchased from Drivetime - Knoxville could pay $1982 while a 36 year married man with no accidents driving a 2010 Ford Fusion Hybrid purchased from Rosen Kia Of Elgin could pay $1134, a difference of $848. However, comparing several quotes for the same person for the 2006 Dodge Grand Caravan or the 2010 Ford Fusion Hybrid in Grafton, can save upto $200 & $110 respectively.

The full rankings are available at http://www.rogru.com