The middle resident of Rustington is 56.2 years old.
Sit with that number. In a typical English or Welsh town the median is 42.5. In Rustington, half the town has passed 56.2, 37.4% are 65 or over, and one resident in sixteen is past 85.
"The retirement coast" has been a newspaper phrase for decades. The 2021 census, summed to true town boundaries, turns it into a table.
The oldest towns in England and Wales
| # | Town | Median age (est.) | 65 and over | 85 and over |
|---|---|---|---|---|
| 1 | Rustington | 56.2 | 37.4% | 6.3% |
| 2 | Seaford | 54.6 | 34.9% | 5.8% |
| 3 | Lytham St Annes | 54.4 | 32.2% | 5.3% |
| 4 | Bexhill-on-Sea | 54.1 | 34.6% | 5.7% |
| 5 | Lee-on-the-Solent | 52.3 | 31.2% | 4.4% |
| 6 | Bridlington | 52.3 | 31.7% | 4.1% |
| 7 | Heswall | 52.2 | 30.6% | 4.7% |
| 8 | Formby | 52.1 | 31.4% | 4.8% |
Every one of the top eight touches the sea, and most of them face south. This is the census confirming something everyone suspected, which is more useful than it sounds: suspicion cannot be compared between towns, and a table can.
The mechanism, to be clear about what is measured and what is read into it, is two flows in one direction. Retirees move toward the coast; the young move toward work. The census measures the result rather than the flows, so the causal story is inference, flagged as such. The result is not in doubt.
What a median of 54 changes
Old is a description here rather than a problem. Several of these towns are growing, their sale prices are ordinary, and a settled town of retirees is many people's exact preference: Rustington and Seaford sit among the quietest towns in the country on recorded crime.
What the number does predict is the shape of everything else on the town's page. Schools: a retirement town keeps few, and the children it has concentrate in them, which is why Bexhill's primaries run near capacity while its median age sits above 54. Work: the census occupation profile thins where most residents have finished working. The high street: fewer takeaways per head, more of everything daytime. One number, read alongside the others, explains half the page.
The other end of the table
The youngest towns are a different England entirely: Canterbury has an estimated median of 27.5, and the bottom of the age league is a list of campuses, because students count as residents where they study. Egham is on it because Royal Holloway is. Between the two ends sits almost thirty years of median age, which is a larger gap than any other measure on this site produces between English towns.
Ages are the 2021 census (table TS007A) summed from output areas to ONS built-up areas. Medians are estimated within the census's five-year bands and labelled so wherever they appear; the shares of residents 65+ and 85+ are exact sums of complete bands. Towns of 20,000+ residents shown; every town of 10,000+ carries its own age profile on its page.