Hawaii: 2am, although some bars close at 4am with a special license
Idaho: 1am for the most part, but 2am in some larger cities
Illinois: Last call isn't set by the state, but varies between 2am and 3am in Chicago depending on the bar.
Kentucky: 2am for most of the state, but 4am in Louisville
Louisiana: Bars can technically serve 24 hours a day if there's no law stating they can't.
Massachusetts: 1am for most of the state, but 2am in Boston
Mississippi: 12am, with some individual cities setting it at 1am or later
Missouri: 1:30am most of the week, but 12am on Sundays
Nebraska: 1am, but 2am in some larger cities
Nevada: 24 hours a day!
New Hampshire: 1am, but some towns allow ordering until 2am
New Jersey: The state allows towns to regulate closing time on a local level.
New Mexico: 2am
New York: 4am in NYC, but earlier (3am, usually) in smaller municipalities
North Carolina: 2am
North Dakota: 2am