What is the state id for idaho? To be eligible for a photo identification card in Idaho, you must be a legal resident of the state. There is no age limit for ID cards. You must apply in person at an Idaho DMV office and you will likely need: Proof of your identity and age, such as your: Passport. Military ID card. U.S. citizenship certificate.What number size is idaho? Idaho Area and Population Density At a total surface area of 83,570 square miles, Idaho is the 14 th biggest state in the country, and even without looking at population density figures, it's already clear from a population of just over 1.6 million that Idaho must be a very sparsely populated state.What is the state of idaho known for? Idaho's agricultural sector supplies many products, but the state is best known for its potato crop, which comprises around one-third of the nationwide yield. The official state nickname is the "Gem State", which references Idaho's reputation for gemstones and, more broadly, its many wilderness areas.How many counties are in the state of idaho? List of counties in Idaho. There are 44 counties in the U.S. state of Idaho.