Hi, everybody,

After years of study of the Houston map, I discovered that the streets
in Houston are numbered quite systematically! Here're the tips for the
area south of I-10 (actually Memorial Dr) and west of Main St. Other 
areas are being studied.

1. All north-south (N-S) streets are even numbered on the west side; all 
are odd numbered on the east side.

2. All west-east (W-E) streets are even numbered on the north side, odd 
on the south side.

3. All street numbers are in ascending order when going from North to 
South and East to West.

4. Approximately the streets all across Houston have predictable street
numbers. This is like a net or Cartesian coordinate. The streets of
about the same latitude have apporximately the same number; so are the 
streets of the same longitude. For example, W-E streets are about 
number 5000 crossing 610 Loop West, 9500 crossing South Gessner, 10000 
crossing Beltway 8 West and 15000 crossing Highway 6. N-S streets are 
1600 crossing Briar Forest, 2600 at Westheimer, 5700 at Harwin and 6700
at Bellaire.

Knowing these tips you'll find a place more easily. Say, you want to go 
to 12345 XXX St. Suppose this street is W-E (this is more likely because
a N-S street at this high number would be far south and there're not as 
many streets down there). Then you can make a good guess that the place 
you go to is to the west of Beltway 8 West. Maybe it's almost near Dairy 
Ashford. And you know for sure it's on the south side of the street.

Have fun. Drive safely.

Yong Huang