A new briefing has been published on the 2023 mid-year population estimates.

The population of East Sussex was estimated to be 555,484 in mid-2023.

  • The number of people in the county has increased by 0.8% since 2022 (England up 1.0%, South East up 1.0%), and by 4.2% since 2013 (England up 5.9%, SE up 7.6%)
  • In the year to June 2023 there was an increase of 4,477 people in East Sussex. This is the highest annual increase in the past 10 years.
  • International net migration continues to rise, and is at the highest level seen in the last decade with 2,923 net arrivals in the year to June 2023 (average international net migration was 694 per year between 2013 and 2023).
  • International net migration is still lower than the number lost to natural change (births minus deaths) of -3,018.
  • Wealden has seen the biggest population increase since 2013 with a rise of 7.8%, the only East Sussex district to have a population increase above the national average (7.0%).
  • Rother has the joint highest population of people aged 85+ in the country (with North Norfolk and New Forest) at 4.9%, one in every 20 people.