NIWOT, CO ZIP Code
| City | NIWOT |
| State | Colorado |
| ZIP Codes count | 3 (see all) |
| Post offices count | 2 (see all) |
| Total population | 4,106 (see all) |
ZIP Codes in 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.
List of NIWOT, CO ZIP Codes
| ZIP | TYPE | POPU |
|---|---|---|
| 80503 | STANDARD | 36,894 |
| 80504 | STANDARD | 58,675 |
| 80544 | PO BOX | 33 |
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:
- Recipient's full name
- Full street address
- 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.
Address example
6969 CONIFER CT
NIWOT CO 80503-8665
NIWOT CO 80503-8665
8030 COUNTRYSIDE PARK
NIWOT CO 80503-8693
NIWOT CO 80503-8693
7766 CRESTVIEW DR
NIWOT CO 80504-7303
NIWOT CO 80504-7303
7117 STABLE DR
NIWOT CO 80503-7611
NIWOT CO 80503-7611
7928 W SUSSEX CT
NIWOT CO 80503-7616
NIWOT CO 80503-7616
6973 WALKER DR
NIWOT CO 80503-8648
NIWOT CO 80503-8648
Map
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Census data for NIWOT, CO
Demographic and housing estimates in NIWOT, CO
| Total population | 4,106 |
| Male | 2,127 |
| Female | 1,979 |
| Total population | 4,106 |
| Under 5 years | 109 |
| 5 to 9 years | 216 |
| 10 to 14 years | 451 |
| 15 to 19 years | 367 |
| 20 to 24 years | 66 |
| 25 to 34 years | 336 |
| 35 to 44 years | 304 |
| 45 to 54 years | 835 |
| 55 to 59 years | 384 |
| 60 to 64 years | 411 |
| 65 to 74 years | 444 |
| 75 to 84 years | 183 |
| 85 years and over | 0 |
| Median age (years) | 46.4 |
| Under 18 years | 1,033 |
| 16 years and over | 3,242 |
| 18 years and over | 3,073 |
| 21 years and over | 2,963 |
| 62 years and over | 929 |
| 65 years and over | 627 |
| Total population | 4,106 |
| One race | 4,058 |
| White | 3,978 |
| Black or African American | 27 |
| American Indian and Alaska Native | 0 |
| Asian | 53 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 0 |
| Two or more races | 48 |
| Citizen, VOTING AGE 18 and over population | 2,925 |
| Male Citizen, VOTING AGE 18 and over population | 1,550 |
| Female Citizen, VOTING AGE 18 and over population | 1,375 |
Social characteristics in NIWOT, CO
| Total households | 1,605 |
| Family households (families) | 1,163 |
| Married-couple family | 975 |
| Male householder, no wife present, family | 98 |
| Female householder, no husband present, family | 90 |
| Nonfamily households | 442 |
| Average household size | 2.56 |
| Average family size | 3.05 |
Economic characteristics in NIWOT, CO
| Total households | 1,605 |
| Less than $10,000 | 46 |
| $10,000 to $14,999 | 0 |
| $15,000 to $24,999 | 94 |
| $25,000 to $34,999 | 111 |
| $35,000 to $49,999 | 69 |
| $50,000 to $74,999 | 262 |
| $75,000 to $99,999 | 163 |
| $100,000 to $149,999 | 237 |
| $150,000 to $199,999 | 201 |
| $200,000 or more | 422 |
| Median household income (dollars) | 112,311 |
Housing characteristics in NIWOT, CO
| Total housing units | 1,674 |
| Occupied housing units | 1,605 |
| Vacant housing units | 69 |
| Total housing units | 1,674 |
| 1-unit, detached | 1,277 |
| 1-unit, attached | 87 |
| 2 units | 0 |
| 3 or 4 units | 0 |
| 5 to 9 units | 250 |
| 10 to 19 units | 60 |
| 20 or more units | 0 |
| Mobile home | 0 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 1,674 |
| Built 2014 or later | 0 |
| Built 2010 to 2013 | 12 |
| Built 2000 to 2009 | 117 |
| Built 1990 to 1999 | 449 |
| Built 1980 to 1989 | 448 |
| Built 1970 to 1979 | 470 |
| Built 1960 to 1969 | 100 |
| Built 1950 to 1959 | 15 |
| Built 1940 to 1949 | 0 |
| Built 1939 or earlier | 63 |
| Total housing units | 1,674 |
| 1 room | 17 |
| 2 rooms | 15 |
| 3 rooms | 186 |
| 4 rooms | 112 |
| 5 rooms | 146 |
| 6 rooms | 125 |
| 7 rooms | 158 |
| 8 rooms | 252 |
| 9 rooms or more | 663 |
| Median rooms | 7.8 |
| Total housing units | 1,674 |
| No bedroom | 17 |
| 1 bedroom | 179 |
| 2 bedrooms | 319 |
| 3 bedrooms | 408 |
| 4 bedrooms | 467 |
| 5 or more bedrooms | 284 |
| Occupied housing units | 1,605 |
| Owner-occupied | 1,328 |
| Renter-occupied | 277 |
| Average household size of owner-occupied unit | 2.80 |
| Average household size of renter-occupied unit | 1.40 |
| Occupied housing units | 1,605 |
| Moved in 2017 or later | 130 |
| Moved in 2015 to 2016 | 46 |
| Moved in 2010 to 2014 | 446 |
| Moved in 2000 to 2009 | 542 |
| Moved in 1990 to 1999 | 240 |
| Moved in 1989 and earlier | 201 |
| Owner-occupied units | 1,328 |
| Less than $50,000 | 0 |
| $50,000 to $99,999 | 0 |
| $100,000 to $149,999 | 0 |
| $150,000 to $199,999 | 28 |
| $200,000 to $299,999 | 66 |
| $300,000 to $499,999 | 321 |
| $500,000 to $999,999 | 662 |
| $1,000,000 or more | 251 |
| Median (dollars) | 650,400 |
| Owner-occupied units | 1,328 |
| Housing units with a mortgage | 975 |
| Housing units without a mortgage | 353 |
| Occupied units paying rent | 277 |
| Less than $500 | 0 |
| $500 to $999 | 95 |
| $1,000 to $1,499 | 144 |
| $1,500 to $1,999 | 25 |
| $2,000 to $2,499 | 0 |
| $2,500 to $2,999 | 13 |
| $3,000 or more | 0 |
| Median (dollars) | 1,102 |
| No rent paid | 0 |
Data is based on 2018 Census
ZIP Codes for other locations
State for NIWOT
Colorado ZIP CodesOther cities in Colorado