'Rock Falls, IL' definitions:

Rock Falls, IL -- U.S. city in Illinois

Name :

Rock Falls, IL -- U.S. city in Illinois

Population (2000) :

9580

Housing Units (2000) :

4098

Land area (2000) :

3.317158 sq. miles (8.591399 sq. km)

Water area (2000) :

0.113580 sq. miles (0.294172 sq. km)

Total area (2000) :

3.430738 sq. miles (8.885571 sq. km)

FIPS code :

64928

Located within :

Illinois (IL), FIPS 17

Location :

41.774753 N, 89.691328 W

ZIP Codes (1990) :

61071

Note :

some ZIP codes may be omitted esp. for suburbs.