Good resource, and free to boot. What’s not to like?

Best,

Ross Kimbarovsky
(presumably, the Devil)

There really are far too many streets on the grid to come up with an practical mnemonic to take them all in; memorizing the mnemonic would be just as tough as memorizing the streets! But there is a middle ground.

We are lucky in that most important east-west named streets on the east side (both NE and SE) are on even 500s. For instance, for the NE, we have:

500 = NE Glisan Street
1500 = NE Halsey Street
2500 = NE Knott Street
3500 = NE Fremont Street
4500 = NE Prescott Street
5500 = NE Killingsworth Street
6500 = NE Ainsworth Street
7500 = NE Lombard Street

I was able to do that from memory. So all you really have to do to get the big picture is knowing those streets, and you can 'drill down' as necessary. Eventually, if you get practiced enough, you'll have a feel for what's near what. If you have a good enough memory, you might actually get things memorized down.

The SE streets run thusly:

500 = SE Stark Street
1500 = SE Hawthorne Blvd
2500 = SE Division Street
3500 = SE Powell Blvd (notably)
4500 = SE Holgate Blvd
5500 = SE Steele Street
6500 = SE Woodstock Blvd
7500 = SE Flavel Street
8500 = SE Clatsop Street/County Line

There are places where it's not quite consistent (NE Lombard is only the 7500 block out to about NE 15th Avenue, then it becomes diagonal; SE Powell Blvd is only exactly the 3500 block along the stretch between SE 52nd and 92nd Avenues). It breaks down on the North Portland peninsula, and there's little of a solid 500-block grid pattern on the west side, of course. No system is complete or perfect, but this one helps you nail down fully 2/3rds of the city, and it has logic and rhythym to it, and is thus nifty.

Oh, my favorite thing? NE HOLman Street = 6300 north, SE TOLman Street = 6300 south. It just worked out that way.

Good luck!

PS: I'm available for more tagline development! Just so you know!