B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 12; Flight Crew Total 5160; Flight Crew Type 2998
Communication Breakdown
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Weight And Balance
General None Reported / Taken
Company Policy; Procedure; Human Factors
Shortly after pushing back from the gate; FA (Flight Attendant) called to ask if the last 2 rows needed to be empty.  I said that we had no idea; that this was the first we had heard of a weight and balance issue; and that I'd ask about it.  We contacted Load Planning (LP); and they told us that the rows needed to be blocked.  After we departed; FA asked if the rows needed to stay empty; or if they could now be occupied.  Again I contacted LP; and they said to keep the rows empty.  I responded that we had no idea of the balance problem until the FAs brought it to our attention. According to the Flight Ops Manual; this information is supposed to be included on the final weights document sent by ACARS.  If the flight attendants had not asked about the rows we would never have known; and would possibly have been out of balance limits.  One picture is the final weight manifest; the other is the reply from Load Planning when I asked how we were supposed to know about rows needing to be blocked.
Air Carrier Captain reported they were not informed of Weight & Balance issue.