As The Paper Noose noted today, the 11th District Democrats have posted the locations for the caucuses on Saturday, Feb. 9. The 11th District encompasses most of the west side of Beacon Hill (though not north of Holgate); you can find your 11th District precinct on this map.
If you're not in the 11th here on the hill, you're in the 37th, which seems to cover everything north of Holgate and most of the hill east of Beacon Ave. The website for the 37th says they'll be posting their caucus locations tomorrow. You can find your 37th District precinct here; you can find all the district maps for the county here.