Last updated: 2025 BLS data · Page refreshed:
How much does a Hydrologists actually take home in Colorado?
4.4% flat rate — 26.0% effective total tax rateData: BLS OEWS 2025 + IRS/State Tax Brackets 2024 • Updated 2026-05-19
Detailed line-by-line tax calculation for a Hydrologists earning $100,840 in Colorado (single filer, standard deduction).
| Tax Component | Annual Amount | Effective Rate |
|---|---|---|
| Gross Salary (Median) | $100,840 | — |
| Federal Income Tax | -$14,025 | 13.9% |
| Colorado State Income Tax | -$4,436 | 4.4% |
| Social Security (OASDI) | -$6,252 | 6.2% |
| Medicare | -$1,462 | 1.5% |
| Total Taxes | -$26,177 | 26.0% |
| Take-Home Pay | $74,662 | 74.0% |
Take-home pay varies significantly across experience levels. Here is the after-tax breakdown for each salary percentile of Hydrologists in Colorado.
| Percentile | Gross Salary | Total Taxes | Take-Home Pay | Tax Rate |
|---|---|---|---|---|
| 10th Percentile (P10) | $82,430 | -$19,908 | $62,521 | 24.2% |
| 25th Percentile (P25) | $91,250 | -$22,911 | $68,338 | 25.1% |
| Median (P50) | $100,840 | -$26,177 | $74,662 | 26.0% |
| 75th Percentile (P75) | $141,460 | -$40,534 | $100,925 | 28.7% |
| 90th Percentile (P90) | $201,630 | -$60,192 | $141,437 | 29.9% |
After federal income tax ($14,025), state tax ($4,436), and FICA ($7,714), a Hydrologists in Colorado takes home $74,662 per year — or $6,221 per month. The effective tax rate of 26.0% is moderate compared to the national range.
A Hydrologists in Colorado loses 26.0% of gross pay to taxes — higher than the ~25% national midpoint. Of the $100,840 gross, $74,663 lands in the paycheck after federal ($14,026), state ($4,437), and FICA ($7,714) withholding.
Colorado applies a flat state income tax — every dollar of wage income is taxed at the same rate. For this Hydrologists salary that contributes $4,437 to the 4.4% effective state-tax burden.
Federal tax on this Hydrologists salary is $14,026 (54%), but combined state ($4,437, 17%) + FICA ($7,714, 29%) make up the other 46% of the bill.
Moving this same Hydrologists salary to a zero-state-tax state would yield around $79,100 net — a gain of $4,437 (5.9%) per year versus Colorado.
Colorado ranks #14 of 34 states for Hydrologists after-tax pay — comfortably in the upper half.
Translated into paycheck cadences, $74,663 net/year works out to $6,222/month or $2,872/bi-weekly for this Hydrologists in Colorado — the numbers that actually hit a checking account after every deduction.
Where does a Hydrologists keep the most of their paycheck? Top 10 states ranked by after-tax take-home pay.
Colorado ranks #14 out of 34 states for Hydrologists after-tax take-home pay.
A Hydrologists in Colorado earning a median salary of $100,840 will take home approximately $74,662 per year after federal income tax ($14,025), state income tax ($4,436), and FICA ($7,714). That is $6,221 per month or $2,871 per bi-weekly paycheck.
The effective total tax rate for a Hydrologists in Colorado is 26.0%, broken down as: federal income tax 13.9%, Colorado state tax 4.4%, and FICA (Social Security + Medicare) 7.6%. This assumes a single filer with the standard deduction for 2024.
Colorado has a 4.4% flat rate. On a Hydrologists's median salary of $100,840, the state income tax amounts to $4,436 per year, which is an effective state rate of 4.4%.
After all taxes, a Hydrologists in Colorado takes home approximately $6,221 per month, or about $35.90 per hour (based on a standard 2,080-hour work year). These figures assume a single filer, standard deduction, and no additional pre-tax deductions.
We start with the 2025 BLS median salary of $100,840 for Hydrologists in Colorado, then subtract: federal income tax using 2024 IRS brackets ($14,600 standard deduction), Colorado state income tax (4.4% flat rate), Social Security (6.2% up to $168,600), and Medicare (1.45%). The result — $74,662/yr — does not include local taxes, pre-tax deductions (401k, HSA), or tax credits.
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This estimate assumes a single filer using the 2024 standard deduction ($14,600), with W-2 employment income only. It does not account for: itemized deductions, tax credits (e.g. earned income credit, child tax credit), local/city taxes, pre-tax contributions (401k, HSA, FSA), self-employment tax, or additional income sources. Actual take-home pay may differ. Consult a tax professional for personalized advice.
Our Methodology · Data Sources · Salary: BLS OEWS · Tax: IRS + State DOR