ZIP Codes count3 (see all)
Post offices count2 (see all)
Total population4,106 (see all)
ZIP Codes for NIWOT, Colorado
80503, 80504, 80544
This list contains only 5-digit ZIP codes. Use our zip code lookup by address feature to get the full 9-digit (ZIP+4) code.

ZIP Codes for NIWOT, CO by streets

Select a street from the list to find ZIP+4 code by address (street and house number)

List of NIWOT, CO ZIP Codes

80544PO BOX33

Post offices

LONGMONT — Post Office
201 COFFMAN ST LONGMONT, CO 80501-9998
NIWOT — Post Office
150 MURRAY ST NIWOT, CO 80544-9997

Envelope example

On the bottom center of the envelope, write the address you want your letter delivered to. Include the following on separate lines:

  1. Recipient's full name
  2. Full street address
  3. City, State, and ZIP Code

Using the same format, write the return address in the top left corner.

Using the full ZIP+4 Code when mailing via the USPS ensures the fastest, most accurate mailing possible. If you are not sure of the full 9-digit ZIP Code, use the 5-digit ZIP Code to avoid loss of letter or package.
The recipient address information is provided for your reference.
The recipient address information is provided for your reference.

Address example

NIWOT CO  80503-8665
NIWOT CO  80503-8693
NIWOT CO  80504-7303
NIWOT CO  80503-7611
NIWOT CO  80503-7616
NIWOT CO  80503-8648


Census data for NIWOT, CO

Demographic and housing estimates in NIWOT, CO

Total population
Total population4,106
Population by age
Total population4,106
Under 5 years109
5 to 9 years216
10 to 14 years451
15 to 19 years367
20 to 24 years66
25 to 34 years336
35 to 44 years304
45 to 54 years835
55 to 59 years384
60 to 64 years411
65 to 74 years444
75 to 84 years183
85 years and over0
Median age (years)46.4
Under 18 years1,033
16 years and over3,242
18 years and over3,073
21 years and over2,963
62 years and over929
65 years and over627
Population by race
Total population4,106
One race4,058
   Black or African American27
   American Indian and Alaska Native0
   Native Hawaiian and Other Pacific Islander0
   Some other race0
Two or more races48
Citizen, voting age population
Citizen, VOTING AGE 18 and over population2,925
Male Citizen, VOTING AGE 18 and over population1,550
Female Citizen, VOTING AGE 18 and over population1,375

Social characteristics in NIWOT, CO

Households by type
Total households1,605
Family households (families)1,163
Married-couple family975
Male householder, no wife present, family98
Female householder, no husband present, family90
Nonfamily households442
Average household size2.56
Average family size3.05

Economic characteristics in NIWOT, CO

Income and benefits (in 2018 inflation-adjusted dollars)
Total households1,605
Less than $10,00046
$10,000 to $14,9990
$15,000 to $24,99994
$25,000 to $34,999111
$35,000 to $49,99969
$50,000 to $74,999262
$75,000 to $99,999163
$100,000 to $149,999237
$150,000 to $199,999201
$200,000 or more422
Median household income (dollars)112,311

Housing characteristics in NIWOT, CO

Housing occupancy
Total housing units1,674
Occupied housing units1,605
Vacant housing units69
Units in structure
Total housing units1,674
1-unit, detached1,277
1-unit, attached87
2 units0
3 or 4 units0
5 to 9 units250
10 to 19 units60
20 or more units0
Mobile home0
Boat, RV, van, etc.0
Year structure built
Total housing units1,674
Built 2014 or later0
Built 2010 to 201312
Built 2000 to 2009117
Built 1990 to 1999449
Built 1980 to 1989448
Built 1970 to 1979470
Built 1960 to 1969100
Built 1950 to 195915
Built 1940 to 19490
Built 1939 or earlier63
Total housing units1,674
1 room17
2 rooms15
3 rooms186
4 rooms112
5 rooms146
6 rooms125
7 rooms158
8 rooms252
9 rooms or more663
Median rooms7.8
Total housing units1,674
No bedroom17
1 bedroom179
2 bedrooms319
3 bedrooms408
4 bedrooms467
5 or more bedrooms284
Housing tenure
Occupied housing units1,605
Average household size of owner-occupied unit2.80
Average household size of renter-occupied unit1.40
Year householder moved into unit
Occupied housing units1,605
Moved in 2017 or later130
Moved in 2015 to 201646
Moved in 2010 to 2014446
Moved in 2000 to 2009542
Moved in 1990 to 1999240
Moved in 1989 and earlier201
Owner-occupied units1,328
Less than $50,0000
$50,000 to $99,9990
$100,000 to $149,9990
$150,000 to $199,99928
$200,000 to $299,99966
$300,000 to $499,999321
$500,000 to $999,999662
$1,000,000 or more251
Median (dollars)650,400
Mortgage status
Owner-occupied units1,328
Housing units with a mortgage975
Housing units without a mortgage353
Gross rent
Occupied units paying rent277
Less than $5000
$500 to $99995
$1,000 to $1,499144
$1,500 to $1,99925
$2,000 to $2,4990
$2,500 to $2,99913
$3,000 or more0
Median (dollars)1,102
No rent paid0
Data is based on 2018 Census

ZIP Codes for other locations

State for NIWOT
Colorado ZIP Codes
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