Mechanical Engineer Salary: Louisville, KY vs Boston, MA
Side-by-side comparison of wages and local price levels for Mechanical Engineers in Louisville, KY and Boston, MA, based on BLS OEWS May 2025 wage data and BEA regional price parities for 2024.
1Which City Pays More?
Detailed Comparison
| Metric | Louisville, KY | Boston, MA | Diff |
|---|---|---|---|
| Median Annual Salary | $99,290 | $119,300▲ | -$20,010 |
| 25th Percentile | $76,370 | $97,660▲ | -$21,290 |
| 75th Percentile | $119,580 | $140,870▲ | -$21,290 |
| 90th Percentile | $149,940 | $166,900▲ | -$16,960 |
| Price Level (BEA 2024, US = 100) | 93.1 | 108.3 | -15.2 |
| Median at National-Average Prices | $106,679 | $110,192▲ | -$3,513 |
| Total Employment | 1,320 | 6,890 | -5,570 |
3Summary Analysis
On paper, Boston, MA pays $20,010 more (median: $99,290 vs $119,300). BEA's regional price parity is 93.1 in Louisville, KY and 108.3 in Boston, MA (United States = 100). At national-average prices the medians are $106,679 and $110,192, so Boston, MA comes out ahead once local prices are counted.
5Reading This Comparison
The $20,010 gap between the two medians is a gap in dollars, not in what those dollars buy. Dividing each median by its area's regional price parity restates it at national-average prices: $106,679 for Louisville and $110,192 for Boston, a difference of $3,513.
The price levels come from the U.S. Bureau of Economic Analysis, which describes them this way: “Regional price parities (RPPs) measure the differences in price levels across states and metropolitan areas for a given year and are expressed as a percentage of the overall national price level.” The figures used here are the all-items index for each whole metropolitan area (Louisville/Jefferson County, KY-IN; Boston-Cambridge-Newton, MA-NH) and cover prices only, not taxes.
BLS estimates 1,320 Mechanical Engineer jobs in the Louisville area and 6,890 in the Boston area. For broader context, see our Kentucky overview and the full Mechanical Engineer city ranking.
Frequently Asked Questions
Is Mechanical Engineer salary higher in Louisville, KY or Boston, MA?
Boston, MA has the higher median wage for Mechanical Engineers ($119,300 per year, against $99,290 in Louisville, KY; BLS OEWS May 2025). Restated at national-average prices using BEA regional price parities, the medians are $106,679 in Louisville, KY and $110,192 in Boston, MA.
How do prices compare between Louisville, KY and Boston, MA?
The U.S. Bureau of Economic Analysis puts the 2024 regional price parity at 93.1 for the Louisville/Jefferson County, KY-IN metropolitan area and 108.3 for the Boston-Cambridge-Newton, MA-NH metropolitan area, where the United States is 100. That is 6.9% below the national level for Louisville, KY and 8.3% above the national level for Boston, MA.
Which city pays Mechanical Engineers more once local prices are counted?
Boston, MA: at national-average prices its median Mechanical Engineer wage is $110,192, against $106,679 for Louisville, KY. The adjustment divides each median by the area's BEA regional price parity and covers prices only, not taxes.