ZIP 83605 vs ZIP 83651

Source:

Caldwell, ID — Nampa, ID

This side-by-side compares ZIP 83605 (Caldwell, ID) and ZIP 83651 (Nampa, ID) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 83605 has a population of 39,649 at 551 people per square mile, while ZIP 83651 has 28,611 at 744 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.

On income and education, ZIP 83605 reports a median household income of $68,427 against $69,914 in ZIP 83651, with per-capita income of $25,866 vs $33,661. The share of adults holding a bachelor's degree or higher is 15.1% in 83605 and 22.1% in 83651. Poverty rate reads 12.4% vs 11.4%, and unemployment 6.1% vs 3.1% — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.

Housing separates these two ZIPs further: median home value sits at $346,100 in 83605 versus $338,900 in 83651, with median rent of $1,124 and $1,426 per month respectively. Homeownership rate is 69.2% vs 72.6%. When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.

Compare different ZIP codes:

vs
Metric
83605
Caldwell, ID
83651
Nampa, ID
Population 39,649 28,611
Median Household Income $68,427 $69,914
Per Capita Income $25,866 $33,661
Median Age 32.4 35.2
Bachelor's Degree or Higher 15.1% 22.1%
Poverty Rate 12.4% 11.4%
Unemployment Rate 6.1% 3.1%
Median Home Value $346,100 $338,900
Median Rent (monthly) $1,124 $1,426
Homeownership Rate 69.2% 72.6%
Population Density (per sq mi) 551 744

Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.

Full Profile
83605
Caldwell, ID
View full ZIP profile →
Full Profile
83651
Nampa, ID
View full ZIP profile →

What are common questions about this comparison?

How do ZIP codes 83605 and 83651 compare?
ZIP 83605 (Caldwell, ID) has a population of 39,649 and a median household income of $68,427. ZIP 83651 (Nampa, ID) has a population of 28,611 and a median household income of $69,914.
Which ZIP code has higher income, 83605 or 83651?
ZIP 83651 (Nampa, ID) has a higher median household income of $69,914 compared to $68,427 for ZIP 83605.
How do I compare two ZIP codes on PlainZIP?
Visit plainzip.com/compare, enter two 5-digit U.S. ZIP codes, and click Compare. You can also navigate directly to /compare/XXXXX-vs-YYYYY to share a specific comparison.

All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Data sourced from official U.S. Census ACS and HUD-USPS ZIP crosswalk data. See our methodology for details. Retrieved and formatted by PlainZIP Editorial.