NW Iowa News

Of the 35,647 people living in Sioux County, Iowa in 2021, 49.5% (17,635) were women and 50.5% (18,012) were men, according to U.S. Census Bureau data obtained by NW Iowa News.

Data showed the average age for men in Sioux County in 2021 was 35 years, lower than the national average of 40 for men.

According to census data, men aged 18 and over outnumbered women in the same age group by 600. Meanwhile, in the 65 and over group, there were 2,476 men and 3,020 women.

An agency of the U.S. Federal Statistical System, the Census Bureau is responsible for compiling statistical facts about the American people, places and economy. Data for this story was compiled from the bureau's American Community Survey. Information from the survey helps to determine how federal and state funds are distributed. These funds significantly influence community services, education, and infrastructure in areas like Sioux County.

Age Range (Years)	Sex	Population in 2021	Population in 2020	Population in 2019	Change 2020-2021	Change 2019-2020
Under 5	Female	1,236	1,236	1,250	0%	-1.1%
Under 5	Male	1,330	1,322	1,307	0.6%	1.1%
5 to 9	Female	1,141	1,127	1,145	1.2%	-1.6%
5 to 9	Male	1,487	1,579	1,355	-5.8%	16.5%
10 to 14	Female	1,573	1,495	1,467	5.2%	1.9%
10 to 14	Male	1,334	1,152	1,361	15.8%	-15.4%
15 to 17	Female	769	675	700	13.9%	-3.6%
15 to 17	Male	889	883	847	0.7%	4.3%
18 and 19	Female	799	779	788	2.6%	-1.1%
18 and 19	Male	778	739	744	5.3%	-0.7%
20	Female	404	290	318	39.3%	-8.8%
20	Male	400	290	328	37.9%	-11.6%
21	Female	438	396	305	10.6%	29.8%
21	Male	339	385	371	-11.9%	3.8%
22 to 24	Female	707	795	838	-11.1%	-5.1%
22 to 24	Male	856	945	978	-9.4%	-3.4%
25 to 29	Female	867	907	916	-4.4%	-1%
25 to 29	Male	997	1,030	950	-3.2%	8.4%
30 to 34	Female	927	927	1,012	0%	-8.4%
30 to 34	Male	969	987	1,037	-1.8%	-4.8%
35 to 39	Female	976	1,057	1,088	-7.7%	-2.8%
35 to 39	Male	1,137	1,177	1,194	-3.4%	-1.4%
40 to 44	Female	1,057	924	886	14.4%	4.3%
40 to 44	Male	1,201	992	886	21.1%	12%
45 to 49	Female	776	744	753	4.3%	-1.2%
45 to 49	Male	814	769	789	5.9%	-2.5%
50 to 54	Female	852	854	861	-0.2%	-0.8%
50 to 54	Male	895	904	912	-1%	-0.9%
55 to 59	Female	1,145	1,213	1,143	-5.6%	6.1%
55 to 59	Male	973	965	995	0.8%	-3%
60 and 61	Female	396	371	338	6.7%	9.8%
60 and 61	Male	494	447	528	10.5%	-15.3%
62 to 64	Female	552	519	596	6.4%	-12.9%
62 to 64	Male	643	602	540	6.8%	11.5%
65 and 66	Female	318	279	313	14%	-10.9%
65 and 66	Male	418	381	416	9.7%	-8.4%
67 to 69	Female	441	461	397	-4.3%	16.1%
67 to 69	Male	387	374	389	3.5%	-3.9%
70 to 74	Female	686	637	617	7.7%	3.2%
70 to 74	Male	636	594	493	7.1%	20.5%
75 to 79	Female	622	698	577	-10.9%	21%
75 to 79	Male	454	418	435	8.6%	-3.9%
80 to 84	Female	466	452	479	3.1%	-5.6%
80 to 84	Male	302	333	336	-9.3%	-0.9%
85 and over	Female	487	478	555	1.9%	-13.9%
85 and over	Male	279	318	294	-12.3%	8.2%

Source: US Census Bureau