Caldwell
Source:
North Carolina
Caldwell is a county in North Carolina with 5 ZIP codes and a total population of 81,490. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
Caldwell is a county inside North Carolina (FIPS code 37027) that contains 5 USPS ZIP codes covering a combined population of 81,490 according to Census ACS 5-Year Estimates. Counties are the natural bridge between state-level summaries and ZIP-level detail — crime statistics, HUD Fair Market Rents, and childcare pricing are all published at the county level, while household income and housing values are published at the ZIP level. This page reconciles the two views so you can see which ZIPs drive the county totals.
The 5 ZIPs listed below are ordered by population and each links to the full ZIP detail page with Census demographics, housing, income, home-price history, and cross-agency inputs. The most populated ZIP in Caldwell is 28645 covering Lenoir with 47,703 residents at 56 people per square mile. Population density across ZIPs in this county varies — use the density column to spot urban cores versus rural delivery areas. A single county can contain both a dense downtown ZIP and a large rural ZIP covering several hundred square miles.
Because Caldwell uses FIPS code 37027, it joins cleanly to county-level federal datasets: HUD Fair Market Rent tables, FBI Uniform Crime Report data, and the Department of Labor National Database of Childcare Prices all key off the same code. That is how neighborhood scorecards combine ZIP-level Census demographics with county-level safety and affordability metrics. All data on this page comes from U.S. Census Bureau ACS 2023 5-Year Estimates and USPS ZIP Code Tabulation Area files — no estimates, no proprietary sources, no editorial scoring.
5
Total ZIPs
81,490
Total Population
ZIP Codes in Caldwell
Side-by-side: Compare 28645 vs 28630 →
Official Data Resources
What are common questions about ZIP codes in this county?
What is the population of Caldwell?▼
What ZIP codes are in Caldwell?▼
What is the median household income in Caldwell?▼
Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →
Source: HUD USPS Crosswalk (ZIP-to-county mapping). Verify with HUD →
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology to see how this data is sourced, computed, and verified.