Postcode district · Knebworth
Who lives in SG3
The age, gender, relationships and health of the people living in SG3, set against England as a whole.
- Council
- North Hertfordshire
- Region
- East of England
- Population
- 11,716 (2024)
SG3Postcode district · Knebworth
Who lives in SG3
Residents
11,716
2024 estimate
Households
4,857
Census
Median age
48
Years, from the census
Under 15 / over 65
16% / 24%
Share of residents
Age of residents
The largest age group is 55–59, at 8.1% of residents. 14.5% are aged 20 to 34 (the peak renting age), against 19.6% across England. 24.1% are 65 or over, above the England figure of 18.4%.
SG3England
0%
2%
5%
8%
10%
0–45–910–1415–1920–2425–2930–3435–3940–4445–4950–5455–5960–6465–6970–7475–7980–8485+
The gender split
51.4% of residents are female and 48.6% male.
SG3
51%
49%
England
- Female51.4%51%
- Male48.6%49%
Relationship status
54.7% of adults in SG3 are married or in a civil partnership, above the England average of 44.7%. 28.3% have never married.
SG3England
Married or civil partnership54.7%44.7%
Never married28.3%37.9%
Divorced or dissolved8.4%9.1%
Separated1.7%2.2%
Widowed7%6.1%
How residents rate their health
84.9% of residents in SG3 describe their health as good or very good, broadly in line with the England average of 82.2%.
SG3
52%
33%
England
- Very good51.8%48.5%
- Good33.1%33.7%
- Fair11.2%12.7%
- Bad3.2%4%
- Very bad0.7%1.2%
Source: Census 2021, Office for National Statistics. Population: ONS mid-year estimates. Open Government Licence v3.0.