Entity Framework T-Sql "having" Equivalent

I believe you can use a GroupBy followed by a Where clause and it will translate it as a Having. Not entirely sure though.

Any reason not to just use a where clause on the result?

var query = from state in states
            join stateowner in stateowners
              on state.stateid equals stateowner.stateid
            group state.Name by state.stateid into grouped
            where grouped.Count() > 1
            select new { Name = grouped.Key, grouped.Count() };