Now, we can reveal the top 10 destinations people going in the opposite direction were headed for.
A total of 7,571 people left the area for a new life elsewhere in the UK in the same 12-month period, the Office for National Statistics figures show.
From Crawley to Lewes, here are the places draining the most people from Mid Sussex.
1. Horsham
The most common place people left the area for was Horsham, with 591 departures in the year to June 2019.
2. Sheffield Park, Uckfield
The second most popular place people left the area for was Wealden, with 527 departures in the year to June 2019. Picture: Elaine Hammond SUS-170627-101555001
3.
The third most common place people left the area for was Brighton and Hove, with 522 departures in the year to June 2019.. Photo: eddie mitchell
4. Lewes
The fourth most common place people left the area for was Lewes with 503 departures in the year to June 2019. Photo: Hilsea Portsmouth