Insulation Workers, Mechanical: Charleston-North Charleston, SC vs San Francisco-Oakland-Fremont, CA pay

Percentile	Published wages	Charleston-North Charleston, SC	San Francisco-Oakland-Fremont, CA
10th	Charleston-North Charleston, SC$47,020San Francisco-Oakland-Fremont, CA$69,440	$47,020	$69,440
25th	Charleston-North Charleston, SC$48,540San Francisco-Oakland-Fremont, CA$75,760	$48,540

Place	Employment	Jobs per 1,000	Location quotient	Employment RSE
Charleston-North Charleston, SC	130Jobs per 1,000: 0.33 Location quotient: 2.02	0.33	2.02	19.9%
San Francisco-Oakland-Fremont, CA	210Jobs per 1,000: 0.09 Location quotient: 0.54	0.09	0.54	35.6%

Median	Charleston-North Charleston, SC$48,540San Francisco-Oakland-Fremont, CA$136,460	$48,540	$136,460

75th	Charleston-North Charleston, SC$65,050San Francisco-Oakland-Fremont, CA$169,090	$65,050	$169,090

90th	Charleston-North Charleston, SC$80,460San Francisco-Oakland-Fremont, CA$181,280	$80,460	$181,280

Start with the answer

Insulation Workers, Mechanical pay in Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

The May 2025 BLS OEWS median for Insulation Workers, Mechanical is $48,540 per year in Charleston-North Charleston, SC. It is $136,460 per year in San Francisco-Oakland-Fremont, CA. Charleston-North Charleston, SC is 64.4% below San Francisco-Oakland-Fremont, CA on the published median.

Both rows use SOC 47-2132 and the same annual wage metric. Median means the middle of each area's published wage spread. It is not one worker's pay. The larger median is not proof that one place gives a better job or a better result. It is one wage fact from one source period.

BLS lists 130 wage and salary jobs in Charleston-North Charleston, SC and 210 in San Francisco-Oakland-Fremont, CA. Those are survey job counts, not open posts. Read pay, job scale, local share, and price level as separate facts before you make a choice.

Evidence: bls-oews-may-2025 · Rule: same-soc-same-metric-pair · nominal-median-gap · employment-not-openings

Pay range

Compare the full Insulation Workers, Mechanical wage ladder

A median can hide a wide range. The 10th, 25th, 50th, 75th, and 90th percentile points show more of each area's spread. A percentile is a rank point. It is not a career stage. The 10th point does not mean new-worker pay. The 90th point does not mean a wage that comes after a set number of years.

The lower half can differ from the upper half. One area can lead at the median and trail at another point. Read each field against the same field in the other area. Do not compare one area's 75th percentile with the other area's median. That would answer a different question.

A posted job range can sit below, across, or above these marks. That does not make the post wrong. A listing can differ by employer, level, hours, field, or work rules. Keep the listing tied to that employer. Keep the BLS range tied to the whole role-place row.

10th percentile: Charleston-North Charleston, SC is $47,020 per year; San Francisco-Oakland-Fremont, CA is $69,440 per year. Charleston-North Charleston, SC is 32.3% below San Francisco-Oakland-Fremont, CA at this point.
25th percentile: Charleston-North Charleston, SC is $48,540 per year; San Francisco-Oakland-Fremont, CA is $75,760 per year. Charleston-North Charleston, SC is 35.9% below San Francisco-Oakland-Fremont, CA at this point.
Median: Charleston-North Charleston, SC is $48,540 per year; San Francisco-Oakland-Fremont, CA is $136,460 per year. Charleston-North Charleston, SC is 64.4% below San Francisco-Oakland-Fremont, CA at this point.
75th percentile: Charleston-North Charleston, SC is $65,050 per year; San Francisco-Oakland-Fremont, CA is $169,090 per year. Charleston-North Charleston, SC is 61.5% below San Francisco-Oakland-Fremont, CA at this point.
90th percentile: Charleston-North Charleston, SC is $80,460 per year; San Francisco-Oakland-Fremont, CA is $181,280 per year. Charleston-North Charleston, SC is 55.6% below San Francisco-Oakland-Fremont, CA at this point.

Evidence: bls-oews-may-2025 · Rule: paired-percentile-fields · same-field-comparison · posted-pay-separation

Shape of pay

Mean and median tell two parts of the Insulation Workers, Mechanical story

Charleston-North Charleston, SC has a mean of $58,710 per year and a median of $48,540. San Francisco-Oakland-Fremont, CA has a mean of $130,800 per year and a median of $136,460. Mean adds all wage values and splits the total by the number of jobs behind the estimate.

Charleston-North Charleston, SC's mean is 21.0% above its median on the same published median. San Francisco-Oakland-Fremont, CA's mean is 4.1% below its median on the same published median. The gaps show that each wage spread has a shape. They do not explain why the shape differs.

Use median for the middle. Use mean to see how the full set pulls. Use percentiles to see more of the spread. None of the three is a pay promise. A person, team, or listing can sit far from all three for reasons that are outside these BLS rows.

Evidence: bls-oews-may-2025 · Rule: paired-mean-median · mean-median-gap · no-causal-inference

Job scale

How the two Insulation Workers, Mechanical job bases differ

Charleston-North Charleston, SC has 130 estimated Insulation Workers, Mechanical jobs. San Francisco-Oakland-Fremont, CA has 210. The larger count shows a larger covered job base in this source. It does not show more open roles, faster hiring, or a better chance for one applicant.

Charleston-North Charleston, SC has 0.33 Insulation Workers, Mechanical jobs per 1,000 local jobs. San Francisco-Oakland-Fremont, CA has 0.09 per 1,000. This rate helps compare places of different size. It is not a job-post rate and does not use the MeritLog catalog.

The employment RSE is 19.9% in Charleston-North Charleston, SC and 35.6% in San Francisco-Oakland-Fremont, CA. RSE means relative standard error. It is a survey precision flag. It is not the chance that the job count or one person's pay is right.

Evidence: bls-oews-may-2025 · Rule: paired-employment · paired-jobs-per-thousand · employment-rse-field-scope

Local share

Where Insulation Workers, Mechanical takes a larger share of jobs

The location quotient is 2.02 in Charleston-North Charleston, SC and 0.54 in San Francisco-Oakland-Fremont, CA. A value of 1 means the role has the same share of local jobs as it has across the nation. A value above 1 means the local share is larger. A value below 1 means it is smaller.

Charleston-North Charleston, SC's quotient is 274.1% above San Francisco-Oakland-Fremont, CA's. That gap is about the job mix. It is not a wage gap, a job-count gap, or a growth claim.

Read location quotient with employment. A small place can have a high share and few jobs. A large place can have many jobs and a share near the national mark. Then read pay as its own field. The three measures do not form one score.

Evidence: bls-oews-may-2025 · Rule: paired-location-quotient · quotient-gap · metric-separation

BEA price view

How price levels differ between Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

BEA's 2024 all-items price index is 101.0 in Charleston-North Charleston, SC and 115.6 in San Francisco-Oakland-Fremont, CA. The U.S. level is 100. A higher number means the broad local price level is higher than the national mark. It does not say a place is good or bad.

Housing is 119.8 in Charleston-North Charleston, SC and 194.7 in San Francisco-Oakland-Fremont, CA. Goods are 96.3 and 108.5. Utilities are 88.2 and 172.6. Other services are 98.3 and 106.2. The parts can move in different ways.

The wage period is May 2025. The price period is 2024. WageScope keeps those clocks visible. It uses the all-items index for one clear proxy. It does not mix BEA prices into the BLS source row, and it does not claim the two releases describe the exact same month.

Evidence: bea-rpp-2024 · bls-oews-may-2025 · Rule: paired-rpp-fields · rpp-us-baseline · source-period-separation

Price-level proxy

Compare the medians in national-price dollars

WageScope divides Charleston-North Charleston, SC's $48,540 median by 101.0 divided by 100. The result is $48,077 per year. It divides San Francisco-Oakland-Fremont, CA's $136,460 median by 115.6 divided by 100. That result is $118,032 per year.

Charleston-North Charleston, SC's proxy is 59.3% below San Francisco-Oakland-Fremont, CA's. The nominal gap is 64.4%. The order can stay the same or change after the price-level step. Both results must keep their labels.

The proxy is a narrow math tool. It is not take-home pay. It does not add taxes, benefits, household size, debt, commute, schools, safety, climate, or taste. It does not set a wage target. Use it to see how one broad price index changes the wage view, then check your own costs outside WageScope.

Evidence: bls-oews-may-2025 · bea-rpp-2024 · meritlog-bounded-comparison-v1 · Rule: price-level-adjusted-formula · nominal-adjusted-gap-separation · proxy-limits

Same-proxy pay

What equal price-level pay would look like in the other place

$48,540 per year in Charleston-North Charleston, SC has the same national-price-dollar proxy as $55,584 per year in San Francisco-Oakland-Fremont, CA. The math keeps Charleston-North Charleston, SC's proxy fixed, then applies San Francisco-Oakland-Fremont, CA's all-items price index.

$136,460 per year in San Francisco-Oakland-Fremont, CA has the same proxy as $119,167 per year in Charleston-North Charleston, SC. This reverse view is useful because the answer depends on which wage you start with. It is not a claim about an offer in either place.

Equivalent nominal pay uses one broad price measure. It does not know what a person buys. It does not know rent, family size, debt, taxes, travel, benefits, or savings. Treat the result as a clean source-backed comparison, not a full move plan or a number an employer must match.

Evidence: bls-oews-may-2025 · bea-rpp-2024 · meritlog-bounded-comparison-v1 · Rule: equivalent-nominal-value-forward · equivalent-nominal-value-reverse · proxy-limits

Data care

Check the survey marks before you use the gap

The mean-wage RSE is 7.5% in Charleston-North Charleston, SC and 10.4% in San Francisco-Oakland-Fremont, CA. The employment RSE is 19.9% and 35.6%. RSE is a precision flag for the field it sits beside. It is not a score for the whole page.

BLS does not publish the same RSE field for the median and each percentile. WageScope does not move a mean RSE to the median. It does not use an employment RSE as a wage care mark. Each value stays tied to its source field. Missing or top-coded values also keep their source state.

A later BLS or BEA release can change the result. MeritLog checks the official source clocks before promotion. The page cannot call its data current when a newer complete release is waiting for review. Current job cards have their own seen date and do not make the government data newer.

Evidence: bls-oews-may-2025 · Rule: paired-rse-field-scope · no-rse-transfer · independent-source-freshness

Use the result

A short check list for Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

Start with the same Insulation Workers, Mechanical wage field. Then read the full percentile spread. Check job count, jobs per 1,000, and location quotient. Add the 2024 all-items and housing price levels. Read the national-price-dollar proxy with its limits. Keep the BLS and BEA dates in view.

Next, inspect one current employer-title match in each place when an exact public place match exists. A job post can show work level, hours, location rules, and pay that the BLS row cannot. The post is dated employer evidence. It does not change the survey median or prove a broad trend.

Last, use your own facts. Compare the job needs with work you have done and can support. A wage gap cannot show fit. A price-level gap cannot show fit. A job count cannot show fit. MeritLog's résumé path starts only after you choose a listing and confirm the work facts you want to use.

Evidence: bls-oews-may-2025 · bea-rpp-2024 · meritlog-public-job-boundary-v1 · Rule: comparison-checklist · job-source-separation · confirmed-resume-evidence

Limits

What this Insulation Workers, Mechanical comparison does not decide

The page does not choose Charleston-North Charleston, SC or San Francisco-Oakland-Fremont, CA for you. It does not say what one worker earns. It does not promise a job, offer, raise, or move result. It does not say why the medians differ. It does not turn the larger wage, job count, quotient, or proxy into a place score.

The comparison leaves out people who work for themselves and other work outside the OEWS scope. It does not add taxes, take-home pay, benefits, stock, bonus pay, hours, travel, remote work, or a household budget. Current listings are separate and can be empty even when the government rows are complete.

Use this page for a bounded choice. Compare the same May 2025 BLS role and metric across two exact areas. Add the separate 2024 BEA price view. Inspect dated employer-title matches. Then build a résumé from facts you have confirmed. Keep each source tied to the question it can answer.

Evidence: bls-oews-may-2025 · bea-rpp-2024 · meritlog-public-job-boundary-v1 · Rule: no-place-choice · no-personal-pay-claim · source-purpose-separation

Insulation Workers, Mechanical: Charleston-North Charleston, SC vs San Francisco-Oakland-Fremont, CA

Same occupation, same annual wage metric

The winner can change when local prices differ

Housing and all-items indexes explain the adjustment

Equivalent nominal pay, using price levels only

Employment scale and local concentration

Compare another occupation or pair

Insulation Workers, Mechanical: Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA guide

Insulation Workers, Mechanical in Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA: common questions

Compare Insulation Workers, Mechanical listings by place

Occupation-wide matches, shown once

No precise employer-title matches right now.

Current jobs

Tailor for a real Insulation Workers, Mechanical job, not a generic wage number.

Insulation Workers, Mechanical pay in Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

Compare the full Insulation Workers, Mechanical wage ladder

Mean and median tell two parts of the Insulation Workers, Mechanical story

How the two Insulation Workers, Mechanical job bases differ

Where Insulation Workers, Mechanical takes a larger share of jobs

How price levels differ between Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

Compare the medians in national-price dollars

What equal price-level pay would look like in the other place

Check the survey marks before you use the gap

A short check list for Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

What this Insulation Workers, Mechanical comparison does not decide

Compare Insulation Workers, Mechanical listings by place

Occupation-wide matches, shown once

No precise employer-title matches right now.

Privacy choices

Insulation Workers, Mechanical: Charleston-North Charleston, SC vs San Francisco-Oakland-Fremont, CA

Same occupation, same annual wage metric

The winner can change when local prices differ

Housing and all-items indexes explain the adjustment

Equivalent nominal pay, using price levels only

Employment scale and local concentration

Compare another occupation or pair

Insulation Workers, Mechanical: Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA guide

Insulation Workers, Mechanical in Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA: common questions

Compare Insulation Workers, Mechanical listings by place

Occupation-wide matches, shown once

No precise employer-title matches right now.

Current jobs

Tailor for a real Insulation Workers, Mechanical job, not a generic wage number.

Insulation Workers, Mechanical pay in Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

Compare the full Insulation Workers, Mechanical wage ladder

Mean and median tell two parts of the Insulation Workers, Mechanical story

How the two Insulation Workers, Mechanical job bases differ

Where Insulation Workers, Mechanical takes a larger share of jobs

How price levels differ between Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

Compare the medians in national-price dollars

What equal price-level pay would look like in the other place

Check the survey marks before you use the gap

A short check list for Charleston-North Charleston, SC and San Francisco-Oakland-Fremont, CA

What this Insulation Workers, Mechanical comparison does not decide

Compare Insulation Workers, Mechanical listings by place

Occupation-wide matches, shown once

No precise employer-title matches right now.