Lapwai, ID has a population of 1,202 and is the 14,024th largest city in the United States. The population density is 1,586 per sq mi which is 8213% higher than the Idaho average and 1651% higher than the national average. The median age in Lapwai is 30 which is approximately 15% lower than the Idaho average of 36. In Lapwai, 44% of the population over 15 years of age are married, 82% speak English and 1% speak Spanish. 65% of Lapwai residents were born in Idaho, 32% were born out of state, 1% were born outside of the United States and 2% were foreign born.