This is a list of settlements in Norfolk by population based on the results of the 2011 census. The last United Kingdom census took place in 2021. In 2021, there were 25 built-up area subdivisions with 5,000 or more inhabitants in Norfolk, shown in the table below.
| Rank | Settlement | Borough/District | Population [1] [2] | ||
|---|---|---|---|---|---|
| 2001 | 2011 | 2021 | |||
| 1 | Norwich/Thorpe St Andrew | Norwich/Broadland | 173,477 | 186,408 | 200,752 |
| 2 | King's Lynn | King's Lynn and West Norfolk | 39,857 | 44,830 | 47,610 |
| 3 | Great Yarmouth | Great Yarmouth | 24,516 | 28,165 | 28,982 |
| 4 | Thetford | Breckland | 21,855 | 24,649 | 25,492 |
| 5 | Gorleston-on-Sea | Great Yarmouth | 23,200 | 24,741 | 24,481 |
| 6 | Dereham | Breckland | 17,510 | 20,171 | 20,785 |
| 7 | Wymondham | South Norfolk | 11,364 | 13,064 | 16,335 |
| 8 | Taverham | Broadland | 15,144 | 15,390 | 14,989 |
| 9 | North Walsham | North Norfolk | 11,845 | 12,463 | 12,829 |
| 10 | Bradwell | Great Yarmouth | 10,316 | 10,528 | 11,828 |
| 11 | Watton | Breckland | 7,625 | 8,951 | 11,543 |
| 12 | Downham Market | King's Lynn and West Norfolk | 6,734 | 9,994 | 11,342 |
| 13 | Attleborough | Breckland | 8,799 | 9,582 | 11,232 |
| 14 | Diss | South Norfolk | 7,615 | 8,537 | 9,599 |
| 15 | Caister-on-Sea | Great Yarmouth | 8,867 | 9,016 | 9,095 |
| 16 | Swaffham | Breckland | 6,885 | 7,208 | 8,434 |
| 17 | Fakenham | North Norfolk | 7,730 | 7,986 | 8,385 |
| 18 | Cromer | North Norfolk | 7,828 | 7,766 | 7,524 |
| 19 | Aylsham | Broadland | 5,434 | 5,906 | 7,184 |
| 20 | Poringland | South Norfolk | 4,573 | 5,132 | 7,104 |
| 21 | Sheringham | North Norfolk | 7,143 | 7,367 | 7,093 |
| 22 | Hethersett | South Norfolk | 5,397 | 5,648 | 7,021 |
| 23 | Hemsby | Great Yarmouth | 5,214 | 5,407 | 5,721 |
| 24 | Long Stratton | South Norfolk | 3,911 | 4,813 | 5,215 |
| 25 | Harleston | South Norfolk | 3,899 | 4,458 | 5,075 |
