From en.wiktionary.org:
[walnut]
** English
[Walnut (disambiguation)#Places]
*** Proper noun
[en-proper noun]
1. [en] :
1. [en] .
2. [en] , named for walnut trees.
3. [en] .
4. [en] .
5. [en] .
6. [en] , named after Little Walnut Creek.
7. [en] .
8. [en] , named after Walnut Creek.
9. [en] , named for walnut trees.
10. [en] , named after the Walnut Mountains.
11. [en] .
12. [en] .