How many spaces are between state and zip code?

City (comma) (space) State (space) Zip Code

such as:

Wilmington, DE 19801

Note: The US Postal Service prefers different spacing than what was previously provided above. USPS prefers no punctuation, two spaces between state abbreviation and ZIP, and all capital letters.

CITY (space) ST (space)(space) #

For example:

WILMINGTON DE 19801