- ZIP
- Postal code
- Code type
- Word before car or code
- Address acronym
- Compress, as a bunch of computer files
- Oomph
- Nothing
- Liveliness
- Compress a computer file
- Energy
- Extra oomph
- Shrink computer files
- Shrink, as computer files
- Nothin' at all
- Flair
- 90210, for one
- The big goose egg
- Nil, nothing
- Goose egg
- Fasten, in a way
- Five-digit code, for short
- Get-up-and-go
- Slug's lack
- Kind of code
- Code often following city and state
- Nada
- Compress, as a data file
- Tang
- ___ code
- Compress a file, perhaps
- Compress, as a computer file
- The White House's 20500
- Move swiftly
- Code word?
- Pizazz
- Diddly-squat
- Postal acronym
- Zest
- Zilch
- Pep
- Go fast
- Close a jacket, perhaps
- Five- or nine- digit code
- Type of code
- Go speedily
- State follower
- Vim
- Fasten, as a ski jacket
- USPS acronym
- Close, as a windbreaker
- 90210, e.g.
- Spice
- Squat
- Letter number
- Nil
- Speed
- Letter director
- Close, as a parka
- Compress, as a file
- 12345, for Schenectady, NY
- Vigor
- __ code
- Move quickly
- Go quickly
- Travel rapidly
- Nothing at all
- Read quickly, with "through"
- Nothing, informally
- Absolutely nothing
- Not a thing
- Dash
- Number on an envelope, for short
- Scoot
- It's nothing
- Zoom (by)
- Number on a letter
- ___ code (number on a letter)
- Hustle
- With 59 Down, number on an envelope
- Close, as a fly
- Dart
- Compressed file format
- Speed: colloq.
- Snap.
- Verve.
- Proceed with pep.
- Song in "Pal Joey."
- Sharp, hissing sound.
- Energy: Colloq.
- Hissing sound.
- Vim: Colloq.
- Common code.
- New code.
- Code or gun
- Code on a letter
- Fasten
- Kind of gun
- Fasten, with "up"
- What a lazybones lacks
- Make haste
- A code in the head?
- Vim; vigor
- Address part
- Elan
- Scoot along
- Fast speed
- Each of the numbers in this puzzle's theme
- Nine-digit number, maybe
- Kind of code or drive
- Nine-digit sequence
- Rush (along)
- City, state, ___
- Five-digit postal code, informally
- 12345, in Schenectady, N.Y.
- Five-digit number on an envelope
- Address ending, informally
- Mail aid
- Do (up), as a fly
- Five-digit postal number, informally
- Number after many a state postal abbr.
- ___ + 4
- Nothing ... or a hint to what's hidden in 20-, 35- and 52-Across
- ___ drive
- ___ your lip!
- City and state follower
- Geographic indicator, briefly
- Élan
- Execute a motion on the fly?
- Move really fast
- Jack squat
- A goose egg
- Envelope code
- Mailing code
- Zero
- Starving artist's net worth, slangily
- 20500, for the White House
- Kind of code or gun
- None at all
- Move speedily
- Move very quickly
- The White House's is 20500
- Close, as a suitcase
- Kind of code on an envelope
- Close, like jeans
- Pizzazz
- Close, like a jacket
- Close a jacket
- Five- or nine-digit number
- ___-A-Dee-Doo-Dah
- Five-digit postal code
- 10001 in NYC, e.g.
- Fly (by)
- That's enough out of you!
- Gusto
- With 50-Down, 90210 and others
- Move at high speed
- Secure with teeth
