'Duncan, OK' definitions:
Duncan, OK -- U.S. city in Oklahoma
From: Gazetteer 2000
Name :
Duncan, OK -- U.S. city in Oklahoma
Population (2000) :
22505
Housing Units (2000) :
10795
Land area (2000) :
38.791513 sq. miles (100.469552 sq. km)
Water area (2000) :
7.208149 sq. miles (18.669019 sq. km)
Total area (2000) :
45.999662 sq. miles (119.138571 sq. km)
FIPS code :
21900
Located within :
Oklahoma (OK), FIPS 40
Location :
34.516619 N, 97.949377 W
ZIP Codes (1990) :
73533
Note :
some ZIP codes may be omitted esp. for suburbs.