Namesakes
American Cities:
1 city
Derry New Hampshire 
British Cities:
1 city
Derry County Londonderry
Cities 100K+:
1 city
Derry United Kingdom
Political Subdivisions:
1 county, 1 district
(district) Derry and Strabane Northern Ireland
(county) County Londonderry (a.k.a. Derry) Northern Ireland