This SQL query will provide a list of tables in a database with the number of rows
select schema_name(tab.schema_id) + '.' + tab.name as [tablename],
sum(part.rows) as [rowcount]
from sys.tables as tab
inner join sys.partitions as part
on tab.object_id = part.object_id
where part.index_id IN (1, 0) -- 0 - table without PK, 1 table with PK
group by schema_name(tab.schema_id) + '.' + tab.name
order by sum(part.rows) desc
Each row represents each table. This will also include all the tables in the a database even the empty ones.