Every address in the City of Los Angeles counts outward from this one intersection. Numbers climb the farther you get from it.
City of Los Angeles only. This logic holds inside the City. It breaks down the moment you cross into neighboring cities such as Burbank, Santa Monica, or Beverly Hills — each runs its own numbering.
Everything on Tab 1, traced back to the source.
Verified additions that line up with the field rules — the "why" behind the "what."
The grid's zero point sits at First Street and Main Street downtown. Address numbers rise as you move away from it in any direction.
For North versus South addresses, the divider is mostly Beverly Boulevard, shifting to Wilshire Boulevard in some areas.
City of Los Angeles standardization ordinances from the 1930s set it: north-south roads take "Avenue," east-west roads take "Street."
The even = east-west, odd = north-south rule is the federal Interstate Highway numbering standard — the same nationwide, not an LA quirk.
On the Interstate system, the lowest numbers start in the south and west and climb going north and east — I-5 hugs the west coast, I-10 runs along the south.
The whole system is City of Los Angeles only. Cross a city line and the numbering can reset or reverse without warning — trust the map, not the pattern.
Two axes run the whole City: North–South and East–West. Every clue below points to one of them. Read down the column you need.
| The clue | ↕ North / South | ↔ East / West |
|---|---|---|
| Roadway type | Avenue | Street |
| Freeway number | Odd3, 5, 405… | Even10, 105, 210… |
| Address digit count rule of thumb | Four digits | Five digits |
Which side of the street — address even / odd
Not on the axis chart on purpose. A Boulevard is a wide major arterial and can run either direction — use the street name, not the suffix, to place it.
City of Los Angeles only. Cross into Burbank, Santa Monica, or Beverly Hills and the whole chart resets — trust the map.
The arrows point the way the numbers grow. Even pulls down and right — South and East. Odd pulls up and left — North and West.
Verified correct against the City of Los Angeles convention
Even pulls down and right · odd pulls up and left
Same matrix, empty. Fill each cell, then Check. Correct answers lock green; misses clear so you re-run them until the whole grid is yours.
| The clue | ↕ North / South | ↔ East / West |
|---|---|---|
| Roadway type | ||
| Freeway number | ||
| Address digit count rule of thumb |
Which side of the street — address even / odd
Your first few minutes at a new First-In map — the same read every house. Fill it for the station you're covering; the grid logic hangs the streets onto what you already know.
| Anchor | North–SouthAvenue / Blvd | East–WestStreet / Blvd |
|---|---|---|
| Center | ||
| West flank | ||
| East flank |
Note The big arterials are usually Boulevards that don't strictly follow the Avenue/Street rule — pick the cross streets oriented closest to true North/South and East/West.
Time. +5 keep going?