UK young children population by age 2022

As of 2022, the population of young children aged between 0 and 4 years old in the United Kingdom was estimated to be just under 3.58 million, with 694, 286 under 12 months old, 690,494 at age one, 717,451 aged two, 733,702 aged three, and 743,637 aged four.

Population of young children (aged 0-4) in the United Kingdom from 1971 to 2022, by single year of age

Characteristic	Under 1 years old	1 years old	2 years old	3 years old	4 years olds
1971	898,674	875,350	913,862	919,563	945,135
1972	846,164	893,112	872,388	910,282	915,935
1973	793,122	841,729	890,312	870,303	907,727
1974	735,132	788,130	837,630	887,158	868,240
1975	706,873	730,600	784,436	833,373	884,487
1976	677,320	703,053	727,975	781,701	830,587
1977	645,940	673,402	699,438	724,210	778,549
1978	655,810	643,970	672,126	698,179	723,114
1979	709,691	653,317	642,965	671,253	697,276
1980	734,109	706,379	652,006	641,043	669,995
1981	729,873	731,302	705,202	650,422	639,530
1982	713,110	724,575	729,747	703,396	648,728
1983	714,626	710,623	723,259	728,543	702,473
1984	712,754	714,180	710,837	723,870	729,062
1985	741,302	711,463	713,857	712,394	725,597
1986	748,199	741,795	711,751	716,385	716,141
1987	756,788	746,361	741,943	714,051	717,181
1988	778,213	753,737	746,162	743,650	714,304
1989	769,297	777,111	754,272	748,864	744,526
1990	773,414	767,281	776,796	756,506	749,767
1991	789,720	771,556	767,759	779,656	758,179
1992	785,117	787,696	771,504	768,282	778,861
1993	756,991	782,337	787,394	772,006	767,743
1994	755,216	754,510	781,701	787,911	772,821
1995	731,719	753,543	754,795	781,441	788,644
1996	718,789	730,047	752,234	755,137	781,563
1997	733,266	718,727	729,026	751,047	754,884
1998	712,544	731,552	719,903	728,775	749,716
1999	704,491	713,065	731,980	721,971	729,242
2000	682,385	701,642	712,124	731,484	723,535
2001	662,662	679,455	698,903	710,986	730,156
2002	661,786	664,800	682,505	702,372	714,737
2003	679,910	662,639	667,850	685,822	706,437
2004	704,450	679,406	663,651	670,805	689,289
2005	716,331	704,755	680,794	665,589	674,460
2006	734,035	716,092	704,383	681,323	666,792
2007	757,429	737,641	717,749	705,686	683,009
2008	788,225	758,643	740,782	718,402	705,931
2009	782,726	787,962	759,942	743,661	718,630
2010	791,801	781,631	788,659	761,633	746,833
2011	801,184	788,412	782,209	790,453	764,623
2012	815,850	806,708	793,264	786,439	794,058
2013	792,557	821,355	811,838	797,448	790,425
2014	778,251	799,621	827,810	817,697	802,891
2015	776,769	786,125	806,704	834,076	823,418
2016	782,450	784,742	793,611	813,356	840,155
2017	763,201	789,285	790,680	799,076	818,499
2018	745,263	770,614	796,314	797,183	804,654
2019	722,881	752,554	777,309	802,334	802,185
2020	701,897	730,219	759,354	783,321	807,539
2021	675,477	701,987	719,130	732,469	751,206
2022	694,286	690,494	717,451	733,702	743,637