'Dennis' definitions:

Dennis, OK -- U.S. Census Designated Place in Oklahoma

From: Gazetteer 2000
Name :
Dennis, OK -- U.S. Census Designated Place in Oklahoma
Population (2000) :
185
Housing Units (2000) :
217
Land area (2000) :
4.520327 sq. miles (11.707592 sq. km)
Water area (2000) :
0.002616 sq. miles (0.006776 sq. km)
Total area (2000) :
4.522943 sq. miles (11.714368 sq. km)
FIPS code :
20100
Located within :
Oklahoma (OK), FIPS 40
Location :
36.543347 N, 94.858091 W
Note :
some ZIP codes may be omitted esp. for suburbs.

Dennis, MA -- U.S. Census Designated Place in Massachusetts

From: Gazetteer 2000
Name :
Dennis, MA -- U.S. Census Designated Place in Massachusetts
Population (2000) :
2798
Housing Units (2000) :
2322
Land area (2000) :
4.898472 sq. miles (12.686984 sq. km)
Water area (2000) :
0.172136 sq. miles (0.445830 sq. km)
Total area (2000) :
5.070608 sq. miles (13.132814 sq. km)
FIPS code :
16740
Located within :
Massachusetts (MA), FIPS 25
Location :
41.735260 N, 70.199199 W
ZIP Codes (1990) :
02638
Note :
some ZIP codes may be omitted esp. for suburbs.