Target the counties you dispatch to, switch the location setting to presence, exclude the Illinois side and block Chicago searches with negative keywords. Those two fixes, geography and keywords, pull a Northwest Indiana budget back over the state line. Porter and Lake County sit inside the Chicago designated market area, and the Valparaiso post on the Chicago TV market explains what that market is. A campaign built on broad keywords and default location settings competes in a metro auction while serving an Indiana service area. The arithmetic below is also what you need when a Chicago agency quotes you a plan built for the metro. The Valparaiso digital marketing page covers the wider scope; this one is the math.
Why the area you target can change your click price
Google prices each auction off the advertisers competing for that particular search. Its help center says you pay only the minimum needed to clear the Ad Rank thresholds and beat the competitor ranked just below you. So your click price is really a report on who else showed up for that search, which is why the same keyword costs different money in different places.
If your campaign can reach searchers across the Chicago metro, you may be bidding against metro companies whose jobs and drive times work out differently from yours. A Naperville roofing company might be able to pay more per click and still make money. Your search terms report shows whether that's happening, so check where your clicks come from before you raise a bid.
Two default settings usually do the leaking. The first is location, because Google's advanced location options default to reach people in, regularly in, or who've shown interest in your targeted locations. Somebody sitting in Chicago who searches about a Valparaiso project counts as interest. The second is keywords, where broad terms with no geography attached collect searches from anywhere your targeting allows.
The arithmetic, with every assumption labeled
Say you run a home service company out of Valparaiso and spend $3,000 a month on search ads. Campaign A is the loose version: broad keywords and the default location setting. Campaign B is the same budget with county targeting, the tighter presence setting and a negative keyword list. Every number below is an assumption that says so or a division you can check. The whole point is that you rerun it with your own figures.
| Step | Campaign A, loose | Campaign B, tightened |
|---|---|---|
| Monthly budget (assumption). | $3,000 | $3,000 |
| Average cost per click (assumption). | $14.00 | $7.50 |
| Clicks: budget divided by cost per click. | 214 | 400 |
| Click to inquiry rate (assumption). | 6 percent | 6 percent |
| Inquiries: clicks multiplied by 0.06. | 12.84 | 24 |
| Cost per inquiry: budget divided by inquiry count. | $233.64 | $125.00 |
| Share of inquiries inside your service area (assumption). | 35 percent | 85 percent |
| Usable inquiries: inquiries multiplied by that share. | 4.49 | 20.4 |
| Cost per usable inquiry: budget divided by usable inquiries. | $668.15 | $147.06 |
| Close rate on usable inquiries (assumption). | 20 percent | 20 percent |
| Jobs: usable inquiries multiplied by 0.20. | 0.90 | 4.08 |
| Gross profit per job (assumption). | $2,800 | $2,800 |
| Gross profit: jobs multiplied by $2,800. | $2,520 | $11,424 |
| Gross profit against spend. | $480 below the $3,000 spent. | $8,424 above the $3,000 spent. |
Now test the assumption doing the most work. Hold the click price at $14.00 in both columns and change only the service area share. Campaign A still gets 12.84 inquiries, and 12.84 multiplied by 0.85 gives 10.91 usable ones. Then $3,000 divided by 10.91 is $274.98 per usable inquiry, against the original $668.15. Geography alone moved the number that far before anybody touched a bid. That's the honest version of this argument, and it survives whatever your real click prices turn out to be. The lead cost calculator runs the same chain if you'd rather type your numbers into boxes. The guide to calculating your cost per lead shows where every input comes from.
Fix one: make the geography say what you mean
- Target the counties and cities you dispatch to. Porter, the eastern half of Lake, maybe LaPorte. A county list is easier to audit than a radius, because it matches how you price a drive.
- Switch the targeting setting to presence. Google's option to reach people in or regularly in your targeted locations drops the interest traffic that pulls Chicago searchers into your account.
- Exclude the Illinois side explicitly. Location exclusions default to presence, so Google excludes people likely to be located in the places you list. Add Cook and Will, and take care with Lake County, because both states have one.
- Skip the DMA option. Google's Campaign Manager help page lists DMA regions as a targeting menu next to countries, regions, cities and postal codes. It credits Nielsen Media Research with creating them. For a Porter County shop the DMA on that menu is Chicago's, which USTVDB lists as 16 counties across two states.
- Read the matched locations report monthly. Google's geographic reporting shows performance by the locations where your ads appeared, and notes those can be physical locations or locations of interest. That report settles most arguments about where the money went.
- Say your coverage out loud on the site. Clear boundaries stop the calls you'll turn down anyway, and the walkthrough on Indiana and Illinois service boundaries covers the wording.
Fix two: a negative keyword list built for this border
- Service A
- Planned coverage: fit and next step.
- Service B
- Planned coverage: proof and next step.
- Service C
- Planned coverage: fit and proof.
Start with what the tool does. In Google's words, negative keywords let you exclude search terms from your campaigns and help you focus on only the keywords that matter to your customers. Negative broad stops a search containing all your terms in any order. Negative phrase stops the terms in the same order, and negative exact stops that exact string with no extra words. One limitation deserves your attention. The same page says negative keywords won't match to close variants or other expansions. Blocking chicago leaves chicagoland and every misspelling of it running.
Build the list from evidence. The search terms report exists to show how your ads performed when triggered by actual searches on the Search Network. Google's own instruction is to add a term as a negative when it isn't relevant enough to what you sell. Start with the place words from the Illinois side, then add the spellings people actually type and the job types you don't take.
A Northwest Indiana starter list usually includes the metro name and its common variants, plus the big Illinois suburbs you keep seeing in the report. Add the words for work you don't sell, and the research language of somebody still gathering prices for a project months away. Review it every month for the first quarter, because the pattern of wasted searches keeps moving while the campaign is young.
What to check 30 days after the change
- Cost per usable inquiry, calculated the way the table does it, against the same number from the month before.
- Share of inquiries inside your counties, counted by hand from the phone log if you have to.
- Search terms that still slipped through, added as negatives the same day you see them.
- Matched locations, checked for any city you have no business paying for.
- Impression share you gave up, so you can see what the tightening cost you in reach and judge whether that reach was ever worth buying.
That last line keeps the change honest, because tighter targeting buys fewer clicks by design. The test is whether the booked jobs held steady or grew while the spend stayed flat.
What the recovered budget is actually for
Money that stops flowing to Illinois clicks has better places to go in Porter County. Start with the local search assets that a Chicago address can't compete for. The post on Valparaiso and the Chicago TV market covers what those assets are and what Porter County looks like by the numbers. If you're weighing what a manager should be doing with the account each month, what a Google Ads management fee covers sets the expectation. When you want the campaign structure written against a county list, the PPC page explains the approach and the Valparaiso digital marketing page puts it in local terms.
Questions, answered.
Should a Valparaiso business target the Chicago DMA in Google Ads?
Usually no. Google's Campaign Manager help page lists DMA regions as a targeting option, and the Chicago DMA spans 16 counties across two states. A Porter County shop that picks it pays to reach the whole metro. Target the counties and cities you dispatch to, then exclude the Illinois side.
Why are my Google Ads clicks expensive in Northwest Indiana?
Google says you pay what's minimally required to clear the Ad Rank thresholds and beat the advertiser immediately below you. Your price follows the field bidding on the same search. When your targeting reaches the Chicago market, that field is drawn from a metro of millions. Tightening the geography changes who you're standing next to in the auction.
Do negative keywords block plurals and misspellings?
No. Google's help page says negative keywords won't match to close variants or other expansions, so adding chicago as a negative leaves chicagoland and chicgo running. Build the list from your own search terms report and add the spellings people actually type. Review it monthly for the first quarter while the pattern of wasted searches is still settling.
Should I target by radius or by county in Google Ads?
Counties and cities are easier to audit, because a county list matches how you dispatch and how you price a drive. A radius around Valparaiso reaches into Illinois at the same distance it reaches into LaPorte, which puts you back in the Chicago auction. If you use a radius anyway, pair it with location exclusions for the Illinois side.

