County ZIP codes · Nebraska · FIPS 31121
Merrick County, NE ZIP Codes
Merrick County, Nebraska has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Merrick County and 3 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $56,917 in 68638 (Fullerton) to $74,583 in 68826 (Central City) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Merrick County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
They carry 9 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 9 residential ZIP codes in Merrick County
6 ZIP codes lie mainly in Merrick County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 68826 | Central City | 3,944 | 27 | $75k | $172k | 100% |
| 68864 | Palmer | 958 | 5 | $83k | $184k | 38% |
| 68628 | Clarks | 848 | 8 | $58k | $184k | 77% |
| 68663 | Silver Creek | 782 | 8 | $57k | $211k | 45% |
| 68827 | Chapman | 761 | 13 | $89k | $430k | 100% |
| 68816 | Archer | 137 | 4 | $62k | $171k | 100% |
Partly in Merrick County
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?
6 ZIP codes of Merrick County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Merrick | Elsewhere |
|---|---|---|
| 68801 | 39% | Hall County 61% |
| 68638 | 2% | Nance County 98% |
| 68872 | 26% | Howard County 74% |
| 68864 | 38% | Nance County 37%; Howard County 25% |
| 68628 | 77% | Polk County 19%; Hamilton County 5% |
| 68663 | 45% | Polk County 30%; Nance County 25% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Merrick County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Merrick County's ZIP codes use 2 prefixes: 686 and 688.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.