According to the U.S. Census Bureau, in 2000 Washington D.C. had the highest percentage of females relative to the overall population. Rhode, Puerto Rico, and New York following in the rankings.

		Male		Female		Males per 100 females		Male:Female ratio
State	Total population	Number	Percent	Number	Percent	All ages	18 years and over	All ages	18 years and over
District of Columbia	572,059	269,366	47.1%	302,693	52.9%	89	86.1	0.89	0.86
Rhode Island	1,048,319	503,635	48.0%	544,684	52.0%	92.5	88.8	0.92	0.89
Puerto Rico	3,808,610	1,833,577	48.1%	1,975,033	51.9%	92.8	88.4	0.93	0.88
New York	18,976,457	9,146,748	48.2%	9,829,709	51.8%	93.1	89.4	0.93	0.89
Massachusetts	6,349,097	3,058,816	48.2%	3,290,281	51.8%	93	89.5	0.93	0.90
Pennsylvania	12,281,054	5,929,663	48.3%	6,351,391	51.7%	93.4	89.9	0.93	0.90
Maryland	5,296,486	2,557,794	48.3%	2,738,692	51.7%	93.4	89.8	0.93	0.90
Mississippi	2,844,658	1,373,554	48.3%	1,471,104	51.7%	93.4	89.6	0.93	0.90
Alabama	4,447,100	2,146,504	48.3%	2,300,596	51.7%	93.3	89.6	0.93	0.90
Connecticut	3,405,565	1,649,319	48.4%	1,756,246	51.6%	93.9	90.5	0.94	0.91
Louisiana	4,468,976	2,162,903	48.4%	2,306,073	51.6%	93.8	90.1	0.94	0.90
New Jersey	8,414,350	4,082,813	48.5%	4,331,537	51.5%	94.3	90.9	0.94	0.91
Missouri	5,595,211	2,720,177	48.6%	2,875,034	51.4%	94.6	91.3	0.95	0.91
West Virginia	1,808,344	879,170	48.6%	929,174	51.4%	94.6	91.7	0.95	0.92
South Carolina	4,012,012	1,948,929	48.6%	2,063,083	51.4%	94.5	91.2	0.94	0.91
Ohio	11,353,140	5,512,262	48.6%	5,840,878	51.4%	94.4	91.1	0.94	0.91
Delaware	783,600	380,541	48.6%	403,059	51.4%	94.4	91	0.94	0.91
Tennessee	5,689,283	2,770,275	48.7%	2,919,008	51.3%	94.9	91.6	0.95	0.92
Maine	1,274,923	620,309	48.7%	654,614	51.3%	94.8	91.7	0.95	0.92
Florida	15,982,378	7,797,715	48.8%	8,184,663	51.2%	95.3	92.5	0.95	0.93
Arkansas	2,673,400	1,304,693	48.8%	1,368,707	51.2%	95.3	92.1	0.95	0.92
Kentucky	4,041,769	1,975,368	48.9%	2,066,401	51.1%	95.6	92.5	0.96	0.93
Virginia	7,078,515	3,471,895	49.0%	3,606,620	51.0%	96.3	93.7	0.96	0.94
Indiana	6,080,485	2,982,474	49.0%	3,098,011	51.0%	96.3	93.3	0.96	0.93
Michigan	9,938,444	4,873,095	49.0%	5,065,349	51.0%	96.2	93.2	0.96	0.93
Vermont	608,827	298,337	49.0%	310,490	51.0%	96.1	93.3	0.96	0.93
North Carolina	8,049,313	3,942,695	49.0%	4,106,618	51.0%	96	93.3	0.96	0.93
Illinois	12,419,293	6,080,336	49.0%	6,338,957	51.0%	95.9	92.9	0.96	0.93
Oklahoma	3,450,654	1,695,895	49.1%	1,754,759	50.9%	96.6	93.8	0.97	0.94
United States	281,421,906	138,053,563	49.1%	143,368,343	50.9%	96.3	93.4	0.96	0.93
Iowa	2,926,324	1,435,515	49.1%	1,490,809	50.9%	96.3	93.4	0.96	0.93
Georgia	8,186,453	4,027,113	49.2%	4,159,340	50.8%	96.8	94	0.97	0.94
New Hampshire	1,235,786	607,687	49.2%	628,099	50.8%	96.8	94.1	0.97	0.94
New Mexico	1,819,046	894,317	49.2%	924,729	50.8%	96.7	94	0.97	0.94
Nebraska	1,711,263	843,351	49.3%	867,912	50.7%	97.2	94.6	0.97	0.95
Kansas	2,688,418	1,328,474	49.4%	1,359,944	50.6%	97.7	95	0.98	0.95
Wisconsin	5,363,675	2,649,041	49.4%	2,714,634	50.6%	97.6	95.1	0.98	0.95
Minnesota	4,919,479	2,435,631	49.5%	2,483,848	50.5%	98.1	95.6	0.98	0.96
Texas	20,851,820	10,352,910	49.6%	10,498,910	50.4%	98.6	96.2	0.99	0.96
South Dakota	754,844	374,558	49.6%	380,286	50.4%	98.5	96.1	0.98	0.96
Oregon	3,421,399	1,696,550	49.6%	1,724,849	50.4%	98.4	96.2	0.98	0.96
California	33,871,648	16,874,892	49.8%	16,996,756	50.2%	99.3	97.1	0.99	0.97
Montana	902,195	449,480	49.8%	452,715	50.2%	99.3	97.2	0.99	0.97
Washington	5,894,121	2,934,300	49.8%	2,959,821	50.2%	99.1	97	0.99	0.97
Arizona	5,130,632	2,561,057	49.9%	2,569,575	50.1%	99.7	97.7	1.00	0.98
North Dakota	642,200	320,524	49.9%	321,676	50.1%	99.6	97.8	1.00	0.98
Idaho	1,293,953	648,660	50.1%	645,293	49.9%	100.5	98.5	1.01	0.99
Utah	2,233,169	1,119,031	50.1%	1,114,138	49.9%	100.4	97.9	1.00	0.98
Hawaii	1,211,537	608,671	50.2%	602,866	49.8%	101	99.4	1.01	0.99
Wyoming	493,782	248,374	50.3%	245,408	49.7%	101.2	99.7	1.01	1.00
Colorado	4,301,261	2,165,983	50.4%	2,135,278	49.6%	101.4	100	1.01	1.00
Nevada	1,998,257	1,018,051	50.9%	980,206	49.1%	103.9	103.2	1.04	1.03
Alaska	626,932	324,112	51.7%	302,820	48.3%	107	107.6	1.07	1.08