- Indian Lake
- Inez
- Ingram
- Itasca
- Imperial
- Indian Hills
- Industry
- Idalou
- Impact
- Ingleside
- Ingleside On-the-Bay
- Iowa Colony
- Iowa Park
- Iraan
- Iredell
- Irving
- Italy
- I B Avila Colonia
- Iago
- Iatan
- Ida
- Idyle Hour Acres
- Idylwood
- Iglehart
- Ignacio Perez Colonia
- Ike
- Ike
- Illinois Bend
- Illinois Heights Colonia
- Imperial Colonia