Montague, CA has a population of 1,378 and is the 13,189th largest city in the United States. The population density is 775 per sq mi which is 234% higher than the California average and 756% higher than the national average. The median age in Montague is 37 which is approximately 3% higher than the California average of 36. In Montague, 49% of the population over 15 years of age are married, 93% speak English and 4% speak Spanish. 70% of Montague residents were born in California, 26% were born out of state, 1% were born outside of the United States and 2% were foreign born.