Here's a link to a .pdf of the map.
There is a Rural District (2), a Central District (3), a Western District (1) and a Southern District (4). District 4 (the Southern District), will not see it's own candidate until the 2020 election. Districts 1 and 3 which are homes to Councilmen Grosch (1) and Mullin (3) will see their elections proceed as normal in 2018. District 4 is home to Councilmen Cunningham and Leonard share District 2 and only one will prevail in the 2020 election.
2020 is also the date for the next census. After that is published, the Districts may need to be redrawn, depending on how the population has shifted in the preceding 10 years.
The Poway Unified School District is undergoing it's own redistricting process. This may be a bit more contentious as the board members all live in much closer proximity to one another. To submit a map of your own, go to their website here.