Sielec [ˈɕɛlɛt͡s] is a village in the administrative district of Gmina Staszów, within Staszów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 4 kilometres (2 mi) south-west of Staszów and 52 km (32 mi) south-east of the regional capital Kielce.

According to the 2002 Poland census, there were 400 people residing in Sielec village, of whom 47.5% were male and 52.5% were female. In the village, the population was spread out, with 25% under the age of 18, 34% from 18 to 44, 23% from 45 to 64, and 18% who were 65 years of age or older.

Table 1. Population level of village in 2002 — by age group

SPECIFICATION					Measure unit	POPULATION (by age group in 2002)
						TOTAL	0-9	10-19	20-29	30-39	40-49	50-59	60-69	70-79	80 +
I.	TOTAL				person	400	42	68	53	49	59	48	34	26	21
	—	of which in			%	100	10.5	17	13.3	12.3	14.8	12	8.5	6.5	5.3
	1.	BY SEX
		A.	Males		person	190	21	29	25	22	30	29	16	10	8
			—	of which in	%	47.5	5.3	7.3	6.3	5.5	7.5	7.3	4	2.5	2
		B.	Females		person	210	21	39	28	27	29	19	18	16	13
			—	of which in	%	52.5	5.3	9.8	7	6.8	7.3	4.8	4.5	4	3.3

Figure 1. Population pyramid of village in 2002 — by age group and sex

Table 2. Population level of village in 2002 — by sex

SPECIFICATION						Measure unit	POPULATION (by sex in 2002)
							TOTAL	Males	Females
I.	TOTAL					person	400	190	210
	—	of which in				%	100	47.5	52.5
	1.	BY AGE GROUP
		A.	At pre-working age			person	100	48	52
			—	of which in		%	25	12	13
		B.	At working age. grand total			person	228	117	111
			—	of which in		%	57	29.2	27.8
			a.	at mobile working age		person	136	62	74
				—	of which in	%	34	15.5	18.5
			b.	at non-mobile working age		person	92	55	37
				—	of which in	%	23	13.8	9.2
		C.	At post-working age			person	72	25	47
			—	of which in		%	18	6.2	11.8