Hampshire Rugby Clubs (link) for the 2012-13 season. It's based on the latest Hampshire RFU handbook and should include all Hampshire RFU member and associate clubs, and schools.
The general rule is that associate clubs with no ground listed are not shown on the map, so this leaves out Rugby-based charities that are associate members of Hampshire RFU. However, you can find out about their activities through these links:
I've parted company with the handbook over the ground for University of Southampton Solent, which I refereed last season at the Hardmoor Sports Ground, opposite Trojans, rather than at Southampton RFC.
The map also includes Farnham RUFC's new clubhouse and grounds, officially opened by Lord Coe on Sunday 2nd December. It's at Wilkinson Way, Monkton Lane, Farnham GU9 9ND - off the A325, not very far from Sainsburys.