Muldoon, TX is a city located in Fayette County, Texas and has a land area of 81.01 square miles (209.82 km2). The water area for the city is 0.11 square miles or 0.28 km2. There is one unique zip code in Muldoon, Texas and it is 78949. The area code(s) for Muldoon is 979/361.
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