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County ZIP codes · Colorado · FIPS 08047

Gilpin County, CO ZIP Codes

Gilpin County, Colorado has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Gilpin County and 2 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $95,625 in 80422 (Black Hawk) to $151,276 in 80403 (Golden) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Gilpin County?

80403 · Golden: $151k80422 · Black Hawk: $96k80427 · Central City: $62k80452 · Idaho Springs: $76k80474 · Rollinsville: –804528040380422804278047480403 · Golden: $151k80422 · Black Hawk: $96k80427 · Central City: $62k80452 · Idaho Springs: $76k80474 · Rollinsville: –804528040380422804278047480403 · Golden: $151k80422 · Black Hawk: $96k80427 · Central City: $62k80452 · Idaho Springs: $76k80474 · Rollinsville: –80452804038042280427
The residential ZIP codes of Gilpin County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 5 postal town names: Golden, Black Hawk, Idaho Springs, Central City, Rollinsville.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 5 residential ZIP codes in Gilpin County

3 ZIP codes lie mainly in Gilpin County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Gilpin County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
80422 Black Hawk 4,363 41 $96k $589k 100%
80427 Central City 567 39 $62k $364k 100%
80474 Rollinsville 264 32 – – 100%

Partly in Gilpin County

Residential ZIP codes mainly in another county that reach at least 1% into Gilpin County, by their share here
In this county
80403 Golden 20,732 146 $151k $838k 12%
80452 Idaho Springs 3,135 24 $76k $449k 2%

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

2 ZIP codes of Gilpin County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Gilpin County and in the neighboring counties
ZIPIn GilpinElsewhere
8040312%Jefferson County 82%; Boulder County 5%
804522%Clear Creek County 98%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Gilpin County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Gilpin County starts with 804.

Three-digit prefixes of Gilpin County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Gilpin County's
PrefixSectional centerHereAll codes
804 Denver, CO (SCF 800) 5 63

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.