| State | Pre-Prohibition(prior to 1919) | Post-Prohibition(after 1933) | 1970s / 26th Amendment(adopted in 1971) | 1980s / Drinking Age Act of 1984 | 21st century |
| Alabama | Pre 1881:None1881:21 (none with consent of parent) | 21 | 1975:Lowered to 19 | 1986:Raised to 21 | 21 (no one underage is allowed consumption Section 28-1) |
| Alaska | N/A | 21 | 1970:Lowered to 19 | 1984:Raised to 21 with grandfather clause (if born before January 1, 1965) | 21 (unless the underage person is not on a licensed premises and the alcoholic beverage is provided by a parent, legal guardian, or spouse over the age of 21) |
| Arizona | N/A | 21 | 1972:Lowered to 19 | 1985:Raised to 21 | 21 |
| Arkansas | Pre 1925:None1925:21 | 21 | 21 | 21 | 21 |
| California | Pre 1891:Regulated by municipality/county (common age was 16)1891:18 (statewide) | 1933:21 | 21 | 21 | 21 (except small amounts for religious ceremonies) |
| Colorado | None | (Dec) 1945:18: for 3.2% near-beer21: for wine and liquor | 18 for 3.2% beer; 21 for wine and liquor | Raised to 21 on Jul 31 1987 (with grandfather clause) | 21 |
| Connecticut | 21 | 21 | 1972:Lowered to 18 | 1982:Raised to 191983:Raised to 201985:Raised to 21 | 21 (exemptions: (1) a person over age eighteen who is an employee or permit holder under section 30-90a and who possesses alcoholic liquor in the course of such person's employment or business, (2) a minor who possesses alcoholic liquor on the order of a practicing physician, or (3) a minor who possesses alcoholic liquor while accompanied by a parent, guardian or spouse of the minor, who has attained the age of twenty-one. Nothing in this subsection shall be construed to burden a person's exercise of religion under section 3 of article first of the Constitution of the state in violation of subsection (a) of section 52-571b. |
| Delaware | N/A | 21 | 1972:Lowered to 20 | 1984:Raised to 21 | 21 |
| District of Columbia | N/A | 18: for beer and wine21: for liquor | 18: for beer and wine21: for liquor | 1986:Raised to 21 with grandfather clause. | 21 |
| Florida | N/A | 21 | 1973:Lowered to 18 1980:19 | 1986:Raised to 21 with grandfather clause | 21 |
| Georgia | N/A | 21 | 1972: Lowered to 18 | 1982:Raised to 191985:Raised to 201986:Raised to 21 | 21 |
| Hawaii | N/A | 21 | 1972:Lowered to 18 | 1986:Raised to 21 | 21 |
| Idaho | N/A | 20: for beer21: for wine and liquor | 1972:Lowered to 19 (all) | 1987:Raised to 21 in 1987 (Apr 11) with grandfather clause | 21 |
| Illinois | 1872:Age of majority (none with written consent of parent) | pre 1961: Age of majority 1961: Raised to 21 | 1973:Lowered to 19: for beer and wine21: for liquor | 1980:Raised to 21 | 21 |
| Indiana | N/A | Post-1934:21 | 21 | 21 | 21 |
| Iowa | N/A | 21 | 1972:Lowered to 19 in 1972 (Jul 1)1973:Lowered to 18 in 1973 (Jul 1)1978:Raised to 19 in 1978 (Jul 1) | 1986:Raised to 21 in 1986 (Jul 1) with grandfather clause. | 21 |
| Kansas | N/A | 1949:18: for beer and wine with less than 4% ABV21: for liquor | 18: for beer and wine with less than 4% ABV21: for beer and wine with 4% ABV or more21: for liquor | 1985:Raised to 21 | 21 (However, anyone under 21 may consume cereal malt beverages with parental supervision on their own property) |
| Kentucky | N/A | 1938:21 | 21 | 21 | 21 |
| Louisiana | None | 18 | 18 | 1987:Raised to 21 de jure in 1987,but de facto age was still 18 until 1995 due to a sale loophole.1995:De facto age raised to 21 in 1995 when loophole was closed.1996:In 1996, briefly lowered by Louisiana Supreme Court to 18 until it reversed its decision, raising to 21 three months later.Other exceptions still remain. | 21 (Exceptions to state law include): *Religious purposes; *When accompanied by a parent, spouse, or legal guardian 21 or over; *For medical purposes; *In a private residence, including up to 20 acres; *The sale, handling, transport, or service of alcoholic beverages in lawful ownership of an establishment or lawful employment of a person under 21 by a licensed manufacturer, wholesaler, or retailer. |
| Maine | N/A | 211969:Lowered to 20 | 1972:Lowered to 181977:Raised to 20 | 1985:Raised to 21 | 21 (however minors can drink at home with parental supervision) |
| Maryland | N/A | 21 | 1974:Lowered to 18: for beer and wine21: for liquor | 1982:Raised to 21 with grandfather clause for those born June 30, 1964, or earlier | 21 (however anyone can drink when parents, spouses, teachers are present) |
| Massachusetts | N/A | 21 | 1973:Lowered to 181979:Raised to 20 in 1979 (Apr 16) | Raised to 21 in 1985 (with grandfather clause) | 21 |
| Michigan | N/A | 21 | 1972:Lowered to 18 in 1972 (Jan 1) | 1978:Raised to 19 in 1978 (Dec 3)1978:Raised to 21 in 1978 (Dec 21), 18 days later.First state to raise age to 21 since it was lowered | 21 |
| Minnesota | N/A | 21 | 1973:Lowered to 18 (June 1)1976:Raised to 19 (Sept 1)First state to raise age after lowering. | 1986:Raised to 21 | 21 |
| Mississippi | ? | 1966:18: for beer and wine21: for liquor(alcohol not legalized until 1966) | 21 | Raised to 21 in 1986 | 21 |
| Missouri | ? | 1945:21 | 21 | 21 | 21 |
| Montana | ? | 21 | 1971:Lowered to 191973:Lowered to 181979:Raised to 19 | 1987:Raised to 21 | 21 |
| Nebraska | ? | 211969:Lowered to 20 | 1972:Lowered to 19 | 1980:Raised to 201985:Raised to 21 | 21 |
| Nevada | ? | 1933:21 | 21 | 21 | 21 |
| New Hampshire | ? | 21 | 1973:Lowered to 181979:Raised to 20 | 1985:Raised to 21 | 21 |
| New Jersey | Before 1880:NonePost-1880:18 (penalties only against businesses) | 21[citation needed] | 1973:Lowered to 18 | 1980:Raised to 191983:Raised to 21 | 21 (As of February 22, 2021, there are no longer any penalties for underage drinking besides warnings.) |
| New Mexico | ? | 1934:21 | 21 | 21 | 21 |
| New York | 18 (16 before 1896) | Initially 21 immediately after Prohibition, then reduced to 18 four months later. | 18 | 1982:Raised to 19 in 1982 (Dec)1985:Raised to 21 in 1985 (Dec) | 21 (Any Age with Parental Consent) |
| North Carolina | ? | 18 | 18: for beer and wine 21: for liquor | 1983:19: for beer and wine 21: for liquor1986:Raised to 21 in 1986 (Sep 1) | 21 |
| North Dakota | ? | 1936:21 | 21 | 21 | 21 |
| Ohio | ? | 1933: 16 1935:18: for 3.2% ABW beer21: for beer stronger than 3.2% ABW, wine and liquor | 18: for 3.2% ABW beer21: for beer stronger than 3.2% ABW, wine and liquor | 1982 (Aug. 19 to Oct. 1):19: for 3.2% ABW beer21: for beer stronger than 3.2% ABW, wine and liquor1982 (From Oct. 1):19: beer21: wine and liquor1988:21 | 21 (However, anyone can drink with parents or legal-age spouse) |
| Oklahoma | ? | Men:21Women:18: 3.2% ABW beer21: for beer stronger than 3.2% ABW, wine and liquor | 1976:Lowered to 18 (for 3.2% ABW beer) for both sexes in 1976 (Dec)Last state to lower the purchase age. | 1983:Raised to 21 | 21 |
| Oregon | ? | 1933:21 | 21 | 21 | 21 |
| Pennsylvania | ? | 1935:21 | 21 | 21 | 21 |
| Rhode Island | ? | 21 | 1970:Lowered to 18 | 1980:Raised to 191981:Raised to 201984:Raised to 21 | 21 |
| South Carolina | 21 | 1935:18: for beer and wine21: for liquor | 18 | 1984:19: for beer and wine21: for liquor1985:Raised to 201986:Raised to 21 | 21 |
| South Dakota | ? | 1934:21 (all)1939:Lowered to 18: for 3.2% beerRaised to 19: for 3.2% beer | 1972:18: for 3.2% beer;21: for wine and liquor | 1984:19: for beer and wine21: for liquor1988:Raised to 21 | 21 |
| Tennessee | Pre 1881:None1881:21 | 211964:Lowered to 18 | 1979:Raised to 19 | 1984:Raised to 21 | 21 |
| Texas | Pre 1909:21None (with written permission of parent or guardian)Post 1909:21 | 21 | 1973:Lowered to 18 | 1981:Raised to 191986:Raised to 21 in 1986 (Sep 1) | Parent consent |
| Utah | ? | 1935:21 | 21 | 21 | 21 |
| Vermont | ? | 21 | 1971:Lowered to 18 | 1986:Raised to 21 | 21 |
| Virginia | ? | 21 | 1974:Lowered to 18: for beer and wine(21: for liquor remained) | 1981:Raised to 19 for off-premises consumption1983:Raised to 19 (all beer)1985:Raised to 21 | 21 |
| Washington | Age of majoritysince 1877 | 21 | 21 | 21 | 21 |
| West Virginia | ? | 18: for beer and wine 21: for liquor | 1972:Lowered to 18 (all) | 1983:Raised to 19(& 21 for non-residents)1986:Raised to 21 | 21 |